RU2805991C1 - Battery and device associated with it, method for its manufacture and device for its manufacture - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: device and method for manufacturing rechargeable batteries, including lithium-ion batteries, which can be used in a vehicle. By incorporating a busbar component into the cover piece, the external structure of the battery becomes more compact and the volumetric energy density is increased.

EFFECT: improving the safety performance of the battery by preventing thermal runaway by controlling the temperature of the battery cells, as well as increasing the efficiency of space utilization with improving energy density. In a battery with a plurality of battery cells, a pressure relief mechanism is provided, a component alignment used to electrically connect a plurality of battery cells, wherein the pressure relief mechanism and the bus component are respectively located on different sides of at least one battery cell, whereby emissions from at least one battery cell are released in a direction away from the bus when activating the pressure relief mechanism, wherein the battery comprises a temperature control component configured to receive a fluid to regulate the temperatures of the plurality of battery cells and damage upon activation of the pressure relief mechanism, thereby causing emissions from the battery cell to pass through the temperature control component.

55 cl, 42 dwg

Description

TECHNICAL FIELD

[01] This application relates to the field of batteries and, in particular, to a battery and an associated device, a method for its manufacture and an apparatus for its manufacture.

BACKGROUND OF THE INVENTION

[02] A chemical battery, electrochemical battery, electrochemical battery or electrochemical cell is a type of device that converts the chemical energy of the active materials of the positive and negative electrodes into electrical energy through a redox reaction. Unlike a conventional redox reaction, oxidation and reduction reactions are carried out separately, with oxidation at the negative electrode and reduction at the positive electrode, and the gain and loss of electrons is carried out through an external circuit, thus generating a current. This is the main characteristic of all batteries. After a long period of research and development, the chemical battery has opened up a wide range of applications, with the device being large enough to fit in a building and small enough to be measured in millimeters. With the development of modern electronic technology, high demands are placed on the chemical battery. Every breakthrough in chemical battery technology has brought revolutionary developments in electronic devices. Many electrochemical scientists around the world are interested in developing chemical batteries to power electric vehicles.

[03] Lithium ion battery, as a kind of chemical battery, has the advantages of small volume, high energy density, high power density, large number of cycle usage times, long storage time, etc., and is widely used in some electronic devices, electric vehicles products, electronic toys and electrical equipment. For example, lithium-ion batteries are widely used in mobile phones, laptops, electric cars, electric vehicles, electric airplanes, electric ships, electronic toy cars, electronic toy ships, electronic toy planes, power tools, etc.

[04] With the continuous development of lithium-ion battery technology, higher demands are placed on the performance characteristics of lithium-ion batteries. It is desirable that a lithium-ion battery can simultaneously consider multiple design factors, among which the safety characteristics of the lithium-ion battery are particularly important.

SUMMARY OF THE INVENTION

[05] The present application provides a battery and related apparatus, a method for manufacturing it, and an apparatus for manufacturing it, which could improve the safety characteristics of the battery.

[06] According to a first aspect of the present application, a battery is provided, the battery comprising: a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells comprises a pressure relief mechanism, and the pressure relief mechanism is operable to reduce internal pressure when the internal pressure or temperature of at least one battery cell reaches a threshold value; and a busbar component configured to electrically connect a plurality of battery cells, wherein the pressure relief mechanism and the busbar component are respectively located on different sides of the at least one battery cell, causing emissions from the at least one battery cell to be released in the direction away from the tire component when the pressure relief mechanism is activated.

[07] By this arrangement of the pressure relief mechanism and the tire component, the safety performance of the battery can be greatly improved. First, in the case where, for example, a battery is used in an electric vehicle and thermal runaway occurs therein, emissions from the battery cell will not be discharged towards passengers in the cabin, thereby improving the safety of the electric vehicle in which the battery is used. Secondly, since the pressure relief mechanism and the busbar component are respectively located on different sides of the battery cell, emissions from the battery cell will not cause a short circuit between the busbar components, which greatly reduces the risk caused by a short circuit between the busbar components, and improves battery safety characteristics.

[08] In some embodiments, the battery further comprises: a temperature control component, wherein the temperature control component is configured to receive a fluid to regulate temperatures of the plurality of battery cells, and the temperature control component is configured to be damaged upon activation of the pressure relief mechanism, thereby causing emissions from battery cell may pass through the temperature control component. By providing a thermal control component, the temperature of the battery cells can be more flexibly and actively controlled. Additionally, even when thermal runaway occurs in the battery, emissions from the battery cell can be effectively released, thereby reducing the risk caused by the inability to release emissions smoothly.

[09] In some embodiments, the temperature control component is configured to be damaged when the pressure relief mechanism is activated, causing fluid to flow out. This configuration allows high temperature and high pressure emissions from the battery cell to be effectively cooled, thereby improving the safety performance of the battery.

[010] In some embodiments, the temperature control component comprises: a first thermal conductive plate, wherein the first thermal conductive plate is attached to a plurality of battery cells; a second thermal conduction plate, wherein the second thermal conductive plate is located on a side of the first thermal conductive plate remote from the battery cells; and a flow path, wherein the flow path is formed between the first heat conduction plate and the second heat conduction plate to allow fluid to flow in the flow path. In this way, the temperature control component can be produced more conveniently, thereby reducing production costs.

[011] In some embodiments, the thermal control component further comprises a bypass structure, wherein the bypass structure is configured to provide a space to allow the pressure relief mechanism to be activated, and the thermal control component is attached to a plurality of battery cells to form a bypass chamber between the bypass structure and the mechanism pressure release. Providing a bypass design can ensure effective actuation of the pressure relief mechanism. Additionally, the bypass chamber may provide a buffer space for release of emissions from the battery cell, thereby reducing the impact pressure of emissions from the battery cell to the outside and further improving the safety characteristics of the battery.

[012] In some embodiments, the bypass structure includes a bottom bypass wall and a side bypass wall surrounding a bypass chamber, wherein the bottom bypass wall is capable of being damaged when the pressure relief mechanism is activated, causing emissions from the battery cell to pass through the temperature control component . This configuration achieves the goal of allowing emissions to pass through the thermostatic component when the pressure relief mechanism is activated in a simple and cost effective manner.

[013] In some embodiments, the thermal control component further comprises a bypass structure, wherein the bypass structure is configured to provide a space to permit actuation of a pressure relief mechanism, wherein the bypass structure comprises a through hole penetrating the thermal control component and a side wall bypass design The bypass design is a wall with a hole in the form of a through hole. The use of a through-hole can allow battery cell emissions to be released more quickly from the battery through the through-hole, thereby reducing the risk of secondary high pressure caused by a blocked outlet and improving the safety characteristics of the battery.

[014] In some embodiments, the side wall of the bypass is configured to be damaged when the pressure relief mechanism is activated to allow fluid to flow out. This configuration allows fluid to flow out in a low cost and simple manner to utilize the fluid of the battery itself to rapidly reduce the emission temperature of the battery cell, further improving the safety characteristics of the battery.

[015] In some embodiments, the side wall of the bypass forms a predetermined internal angle with respect to the direction of the pressure relief mechanism towards the thermostatic component, and wherein the predetermined internal angle is greater than or equal to 15° and less than or equal to 85°. In this way, the bypass structure can be produced more easily, and furthermore, it can also make it easier for the bypass side wall to be damaged by emissions from the battery cell to allow fluid to flow out.

[016] In some embodiments, the thermal control component includes a relief mechanism configured to be actuated upon activation of the pressure relief mechanism to allow at least emissions from the battery cell to be released through the thermal control component. This configuration allows emissions to pass through the temperature control component in a simple and efficient manner.

[017] In some embodiments, the battery further includes a collection chamber, wherein the collection chamber is configured to collect emissions from the battery cell and the thermal control component upon activation of the pressure relief mechanism, the bypass chamber and the collection chamber being isolated by the thermal control component. The collection chamber may provide additional buffering for emission release to further reduce emission shock pressure. Additionally, the collection chamber can further reduce the risk of secondary damage to the exterior from emissions.

[018] In some embodiments, the battery further includes a collection chamber, wherein the collection chamber is configured to collect emissions from the battery cell and the temperature control component upon activation of the pressure relief mechanism, the bypass structure being in communication with the collection chamber. This configuration allows emissions to flow unimpeded into the collection chamber, further reducing the risk of emissions to the outside and reducing environmental pollution. Additionally, the collection chamber can provide additional buffering for the release of emissions, which further reduces the impact pressure of the emissions.

[019] In some embodiments, the battery further includes a protective element, wherein the protective element is located on a side of the thermal control component remote from the battery cells, and the collection chamber is located between the thermal control component and the protective element. The guard element may provide additional protection to the battery by preventing foreign objects from damaging the battery and preventing external dust or debris from entering the battery's interior. Additionally, the protective element and the temperature control component further define a collection chamber to provide additional buffering for the release of emissions upon activation of the pressure relief mechanism to reduce the shock pressure of the emissions.

[020] In some embodiments, the battery further includes a sealing element located between the temperature control component and the protective element to seal the collection chamber. Providing a sealing member can effectively prevent emissions from being accidentally released from the collection chamber, thereby improving the safety performance of the battery.

[021] In some embodiments, the battery further comprises: a cover member, wherein the cover member is adjacent to the tire component and a distance therebetween is less than 2 mm. This configuration allows for a more compact battery design, increases the efficiency of utilization of the battery's internal space, and therefore increases the volumetric energy density of the battery.

[022] In some embodiments, the closure member is in contact with the tire component. This configuration can further reduce the space occupied by the high-voltage component and the low-voltage battery control component and increase the volumetric energy density.

[023] In some embodiments, the battery further comprises a casing shell, wherein the casing shell and the cover member together form an enclosing electrical chamber for housing a plurality of battery cells. The housing shell and the cover piece may provide space to accommodate a plurality of battery cells and provide protection to the battery cells.

[024] In some embodiments, the battery further comprises: a cover piece, wherein the cover piece includes a housing space configured to receive a tire component; and an insulating portion, wherein the insulating portion is attached to the closing member and configured to cover at least the busbar component. By integrating a busbar component into the cover piece, the external structure of the battery becomes more compact and the volumetric energy density is increased. Additionally, this approach is more convenient for battery maintenance operations.

[025] In some embodiments, the insulating portion is applied to or mounted on the cover piece. This approach is more conducive to battery production.

[026] In some embodiments, the battery further comprises: a casing shell, wherein the casing shell and the cover member together form a female electrical chamber for housing a plurality of battery cells; and a battery control unit, wherein the battery control unit is at least partially located outside the electrical chamber. The battery control unit, at least partially located outside the electrical chamber, is more conducive to maintenance of the battery, especially the battery control unit.

[027] In some embodiments, the battery control unit is at least partially integrated into the cover piece. The battery control unit, at least partially located outside the electrical chamber, is more conducive to maintenance of the battery, especially the battery control unit.

[028] In some embodiments, the temperature control component is a lower portion of the housing shell, and wherein the housing shell further includes a side portion, the side portion being sealed to the temperature control component. In this way, the casing shell can be produced more easily, which reduces production costs.

[029] In some embodiments, the thermal control component is integrated or located within the housing shell. In this way, the housing shell can provide additional protection to the thermal management component, thereby improving the stability of the battery structure.

[030] In some embodiments, the collection chamber is formed between the thermal control component and the housing shell or is integrated within the housing shell. This configuration allows for easier formation of the collection chamber, thereby facilitating production and maintenance of the battery.

[031] In some embodiments, the battery cell further includes a housing having an opening and surrounded by a plurality of walls, and a cover plate for closing the opening, with a pressure relief mechanism located on at least one of the plurality of walls. This configuration achieves the purpose of arranging the pressure relief mechanism and the tire component on different sides in a simple and effective manner, and therefore improves the safety performance of the battery.

[032] In some embodiments, the outer surface of the pressure relief mechanism is flush with or recessed into the outer surface of at least one wall. This configuration can prevent accidental damage to the pressure relief mechanism and can also provide a certain bypass space for the pressure relief mechanism when thermal runaway occurs in the battery.

[033] In some embodiments, the pressure relief mechanism is located in a corner portion between two adjacent walls of a plurality of walls. This configuration can make the arrangement of the pressure relief mechanism more varied, thereby improving the flexibility of the arrangement and placement of the battery cell.

[034] In some embodiments, a plurality of pressure relief mechanisms are provided, with a plurality of pressure relief mechanisms located on one of a plurality of walls or a plurality of pressure relief mechanisms located on at least two of a plurality of walls. Providing multiple pressure relief mechanisms can provide rapid pressure relief when thermal runaway occurs in the battery, thereby further improving the safety characteristics of the battery.

[035] In some embodiments, the battery cell comprises at least two walls, wherein the at least two walls comprise a first wall and a second wall that intersect each other, a pressure release mechanism is provided on the first wall, and a temperature control component is attached to the first wall; and the battery further includes a support component, wherein the support component is attached to the second wall and configured to support the battery cell. This method of locating the pressure relief mechanism on the side can further reduce the size of the battery in the height direction and therefore make the battery structure more compact, which helps to increase the volumetric energy density.

[036] In some embodiments, the battery further comprises a collection chamber, wherein the collection chamber is configured to collect emissions from the battery cell and the thermal control component upon activation of the pressure relief mechanism, and the support component includes an additional collection chamber, wherein the additional collection chamber is in communication with collection chamber. This configuration allows emissions to flow unimpeded into the collection chamber, further reducing the risk of emissions to the outside. Additionally, an additional collection chamber can provide additional buffering for the emission release to further reduce the emission shock pressure.

[037] In some embodiments, the support component includes an additional collection chamber, the additional collection chamber being in communication with the collection chamber. An additional collection chamber can provide additional buffering for emission release to further reduce emission shock pressure.

[038] In some embodiments, the battery further comprises a housing, wherein the housing includes a cover member and a housing shell, and the housing shell and the cover member together form a female electrical chamber for housing a plurality of battery cells, wherein the support component is a lower portion of the housing shell or located inside the casing shell. This makes the configuration of the support component more varied so that the battery can be produced in a variety of ways, thereby improving the manufacturing flexibility of the product.

[039] In some embodiments, the support component is a lower portion of the housing shell or located within the housing shell. This makes the configuration of the support component more varied so that the battery can be produced in a variety of ways, thereby improving the manufacturing flexibility of the product.

[040] In some embodiments, the support component is integral with the temperature control component as a single piece, or the support component is attached to the temperature control component. This makes the configuration of the support component more varied so that the battery can be produced in a variety of ways, improving the manufacturing flexibility of the product.

[041] In some embodiments, the support component includes an additional flow channel, wherein the additional flow channel is in communication with the flow channel to allow fluid to flow therein in the temperature control component. This configuration can promote fluid flow, thereby improving the temperature control effects of the battery, and can advantageously direct the release of emissions.

[042] In some embodiments, the support component includes an additional collection chamber, the additional collection chamber being in communication with the collection chamber. An additional collection chamber can provide additional buffering for emission release to further reduce emission shock pressure.

[043] In some embodiments, the battery further includes a strip extending between the cover member and the housing shell, with a thermal control component located between the strip and the battery cell. This configuration can completely increase the space utilization and therefore make the battery more compact.

[044] In some embodiments, the bar is hollow, and the hollow space of the bar constitutes a collection chamber. This configuration can further increase space utilization.

[045] In some embodiments, the outer surface of the pressure relief mechanism is flush with or recessed into the outer surface of the first wall. This approach can prevent accidental damage to the pressure relief mechanism, and can also provide a certain bypass space for operating the pressure relief mechanism.

[046] In some embodiments, the battery cell further includes a housing having an opening and is surrounded by a plurality of walls, and a cover plate for closing the opening, the first wall comprising a cover plate or at least one of the plurality of housing walls. This configuration allows the battery cells to be placed in the closure member in various desired positions, whereby battery products can be more varied without affecting the safety of the battery.

[047] In some embodiments, the battery further comprises: an attachment component adapted to be attached to the battery cell using an adhesive; and an insulating component, wherein the insulating component is configured to prevent adhesive from being applied between the attachment component and the pressure relief mechanism. By providing the insulating component, it is possible to effectively prevent adhesive from being applied between the attachment component and the pressure release mechanism during the manufacturing process of the battery. Moreover, the efficiency and accuracy of adhesive application can also be improved, thereby improving battery production efficiency.

[048] In some embodiments, the insulating component comprises: a main body and a protrusion, the protrusion protruding from a surface of the main part in a direction of the protrusion to the outside of the main part, the protrusion being configured to align with a pressure release mechanism in the direction of the protrusion when attaching the main part to the component for attachment, and the peripheral dimension of the projection is greater than or equal to the peripheral dimension of the pressure relief mechanism. This configuration can simply and effectively prevent adhesive from being applied to the surface of the pressure relief mechanism during the battery manufacturing process, thereby preventing the pressure relief mechanism from being obstructed when it is operated.

[049] In some embodiments, the height of the protrusion is greater than or equal to a predetermined adhesive application height and is compressible to match the adhesive application height when the plurality of battery cells are attached to the attachment component. This configuration ensures that the projection can effectively prevent adhesive from being applied between the attachment component and the pressure release mechanism. Moreover, due to this, the insulating component does not affect the reliable adhesive connection between the attachment component and the pressure relief mechanism and the actuation of the pressure relief mechanism.

[050] In some embodiments, the attachment component comprises a temperature-regulating component. In this way, the insulating component can be fixed between the pressure relief mechanism and the temperature control component such that the presence of adhesive between them does not affect the actuation of the pressure relief mechanism.

[051] In some embodiments, the pressure relief mechanism comprises at least one of a pressure-sensitive pressure relief mechanism and a temperature-sensitive pressure relief mechanism. This makes the choice of pressure relief mechanism more varied so that products can also be more varied to meet the requirements of different applications and different users.

[052] In some embodiments, the pressure relief mechanism comprises a connecting block, wherein the connecting block includes a cutout and a first boss, wherein the first boss is connected to an inner wall of the cutout and extends in a direction of the axis of the cutout; a pressure relief sheet operable to reduce the internal pressure when the internal pressure of the battery cell reaches a threshold value, wherein the pressure relief sheet is provided on the first bulge side; a first protective sheet configured to protect the pressure relief sheet and located on the other side of the first bulge remote from the pressure relief sheet; a compression ring configured to compress the first protective sheet and located on a side of the first protective sheet remote from the first thickening; and a compression structure connected to the connecting block and configured to be compressed in a direction of the cutout axis to compress the compression ring. In this way, direct contact of the pressure relief sheet with the electrolyte solution in the battery cell can be prevented, thereby reducing corrosion of the pressure relief sheet by the electrolyte solution and also reducing the exposure of the electrolyte solution to the pressure relief sheet. Additionally, in the installation process, by providing a thickening on the inner wall of the connection block cutout and providing a protective sheet and a pressure relief sheet on both sides of the thickening, respectively, it is possible to install the pressure relief mechanism on both sides at the same time to simplify the installation process; and for the side where the protective sheet is installed, the protective sheet can be compressed by the compression ring, and then the compression ring is compressed by the compression structure; The overall structure is simple and the operation is simple.

[053] In some embodiments, the pressure relief mechanism further comprises: a second protective sheet configured to protect the pressure relief sheet, wherein the second protective sheet is mounted on the connection block and located on a side of the pressure relief sheet remote from the first boss, and also covers the pressure relief sheet. A second protective sheet provided on a side of the pressure relief sheet away from the interior of the battery cell can protect the pressure relief sheet from exposure to external components.

[054] In some embodiments, the battery cell further comprises a coupling mechanism disposed in an opening of the housing wall where the pressure relief mechanism is located and having an annular shape, wherein the coupling mechanism is configured to couple the pressure relief mechanism to the wall, wherein the pressure relief mechanism is located on the side of the connecting mechanism that is closest to the inside of the housing. With this configuration, when the internal pressure or temperature of the battery cell reaches a threshold value, the pressure release mechanism has enough space to crack and open, whereby the internal pressure of the battery cell can be reduced. In addition, when thermal runaway occurs in the battery cell, the pressure relief mechanism cracks and liquid or solid combustible material, which may also contain conductive material, is expelled while the internal gas pressure in the battery cell is reduced. Therefore, when the pressure relief mechanism is provided on the body and is not placed on the same side as the electrode clamps on the cover plate, a short circuit between the electrode clamps can be avoided. Moreover, given that the electrode clamps generally face upward, that is, in the passenger's direction, when installing the battery in a vehicle, if the pressure relief mechanism is installed on a side other than the electrode clamps, the flow of gas and other materials allocated Once the pressure release mechanism cracks, will not be released to the passenger, which will not cause burn or scald to the passenger, which reduces the risk to the passenger.

[055] In some embodiments, the pressure relief mechanism is configured as a pressure relief area of the battery cell body, wherein the pressure relief area includes a first recess provided on an inner surface of the battery cell body and a second recess provided on an outer surface of the battery cell body and a first recess is provided opposite the second recess, wherein the bottom wall of the first recess and/or the bottom wall of the second recess is provided with a third recess, and a pressure relief area is configured to crack in the third recess to reduce the internal pressure when the internal pressure of the battery cell reaches a threshold value. Thus, the pressure relief region has a thickness in the third recess that is smaller than the thickness of other regions of the battery cell, such that when thermal runaway occurs in the battery cell, the battery cell may crack in the relatively weak third recess to reduce internal pressure. In addition, compared with the method in which the battery cell is further installed with a pressure relief mechanism, the pressure relief region in the embodiments of the present application has a simpler machining process. For example, the first recess, the second recess and the third recess can be provided by stamping, with the first recess positioned opposite the second recess, and particularly by opposing stamping to simultaneously machine the two recesses, whereby the machining process is convenient and efficient. Moreover, the dimensions, shape, etc. of the three recesses are flexibly set and can be adjusted according to practical applications.

[056] According to the second aspect of the present application, a device is provided. The device includes a battery as described above in the first aspect, wherein the battery is configured to supply electrical power to the device.

[057] According to a third aspect of the present application, a method for manufacturing a battery is further provided. The method includes: providing a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells includes a pressure relief mechanism, and the pressure relief mechanism is operable to reduce internal pressure when the internal pressure or temperature of the at least one battery cell element reaches the threshold value; providing a busbar component configured to electrically connect a plurality of battery cells, and positioning the pressure relief mechanism and the busbar component, respectively, on different sides of the at least one battery cell, whereby emissions from the at least one battery cell are released in a direction in side away from the tire component when actuating the pressure relief mechanism.

[058] In some embodiments, the method further includes providing a temperature control component, wherein the temperature control component is configured to receive a fluid for adjusting the temperature of the plurality of battery cells, and the temperature control component is configured to be damaged upon activation of the pressure relief mechanism, thereby causing emissions from battery cell pass through the temperature control component.

[059] In some embodiments, the method further includes: attaching a temperature-regulating component to a first wall of at least two battery cell walls and providing a pressure release mechanism on the first wall; and attaching a support component configured to support the battery cell to the second wall.

[060] In some embodiments, the method further includes: providing an attachment component adapted to be attached to the battery cell using an adhesive; and providing an insulating component whose design prevents the application of adhesive between the attachment component and the pressure relief mechanism.

[061] According to a fourth aspect of the present application, an apparatus for manufacturing a battery is provided. The device includes a battery cell manufacturing module configured to manufacture a plurality of battery cells, wherein at least one battery cell of the plurality of battery cells comprises: a pressure relief mechanism, wherein the pressure relief mechanism is operable to reduce internal pressure when the internal pressure or temperature of at least one battery cell reaches a threshold value; a bus component manufacturing module configured to manufacture a bus component, wherein the bus component is configured to electrically connect a plurality of battery cells; and a mounting module configured to respectively locate the pressure relief mechanism and the tire component on different sides of the at least one battery cell such that emissions from the at least one battery cell are released in a direction away from the tire component when driven into action of the pressure release mechanism.

BRIEF DESCRIPTION OF GRAPHIC MATERIALS

[062] The accompanying graphics described herein are intended to provide further understanding of this application and constitute a part of this application. The illustrative embodiments of the present application and the description thereof are intended to illustrate the present application and do not constitute an undue limitation of the present application. On graphic materials:

in fig. 1 is a schematic structural representation of some embodiments of a vehicle in which a battery of the present application is used;

in fig. 2 is a schematic exploded view of a battery in accordance with some embodiments of the present application;

in fig. 3 is a schematic exploded view of a battery in accordance with some embodiments of the present application;

in fig. 4 is a schematic exploded view of a battery cell in accordance with some embodiments of the present application;

in fig. 5 is a schematic perspective view of a battery cell according to some embodiments of the present application;

in fig. 6 is a schematic perspective view of a battery cell according to some embodiments of the present application;

in fig. 7 is a cross-sectional view of a battery according to some embodiments of the present application;

in fig. 8 is an enlarged view of part B of the battery shown in FIG. 7;

in fig. 9 is a top view of a temperature control component in accordance with some embodiments of the present application;

in fig. 10 is a bottom view of the temperature control component shown in FIG. 9;

in fig. 11 is a cross-sectional view taken along line A-A of the thermoregulatory component shown in FIG. 9;

in fig. 12 is an exploded view of the temperature control component shown in FIG. 9;

in fig. 13 is a top view of a security element in accordance with some embodiments of the present application;

in fig. 14 is an enlarged view of part C of the battery shown in FIG. 7;

in fig. 15 is an exploded view of a battery according to some embodiments of the present application;

in fig. 16 is an exploded view of a battery in accordance with some embodiments of the present application;

in fig. 17 is a cross-sectional side view of a battery according to some embodiments of the present application;

in fig. 18 is an enlarged view of part A of the battery shown in FIG. 17;

in fig. 19 is an exploded view of a battery cell according to some embodiments of the present application;

in fig. 20 is a perspective view of a battery cell according to some embodiments of the present application;

in fig. 21 is a perspective view of the battery cell shown in FIG. 20, from a different angle;

in fig. 22 is an exploded view of the battery cell shown in FIG. 21;

in fig. 23 is an exploded view of a battery in accordance with some embodiments of the present application;

in fig. 24 is a perspective view of a portion of a housing shell in the form of a battery housing according to some embodiments of the present application;

in fig. 25 is a perspective view of a portion of a housing shell in the form of a battery housing according to some embodiments of the present application;

in fig. 26 is an exploded view of a temperature control component in accordance with some embodiments of the present application;

in fig. 27 is a perspective view of an insulating component in accordance with some embodiments of the present application;

in fig. 28 is an exploded view of an insulating component in accordance with some embodiments of the present application that is not yet attached to the temperature control component;

in fig. 29 is an exploded view of an insulating component in accordance with some embodiments of the present application that has been attached to a temperature control component;

in fig. 30-33 are exploded views of certain embodiments of the pressure relief mechanism of the present application;

in fig. 34 and 35 are partial schematic diagrams of some embodiments of a battery cell housing provided with a pressure relief mechanism according to an embodiment of the present application;

in fig. 36 is a cross-sectional view of some embodiments of a battery cell housing according to the present application;

in fig. 37 is an enlarged view of the area A1 shown in FIG. 36;

in fig. 38 is an exploded view of some embodiments of a battery cell according to the present application;

in fig. 39 is an exploded view of some embodiments of a battery cell with a pressure relief mechanism according to the present application;

in fig. 40 is an exploded view of some embodiments of a battery cell with a pressure relief mechanism and a support plate according to the present application;

in fig. 41 is a flow diagram of some embodiments of a method for manufacturing a battery according to the present application; And

in fig. 42 is a schematic structural representation of some embodiments of a battery manufacturing apparatus according to the present application.

DESCRIPTION OF IMPLEMENTATION OPTIONS

[063] To make the objectives, technical solutions and advantages of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and fully described below with reference to drawings showing various embodiments of the present application. It should be understood that the described embodiments represent only some, and not all, embodiments of the present application. All other embodiments obtained without any creative effort by one skilled in the art based on the embodiments disclosed in this application shall be within the scope of protection of this application.

[064] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as terms commonly understood by those skilled in the art to which this application pertains. The terms used in the description of this application are solely for the purpose of describing specific embodiments and are not intended to limit this application. The terms “comprise”, “include”, “have”, “with”, “involve”, “accommodate” and the like in the description and claims of the present application, as well as in the description of the above graphics, are non-limiting terms. Therefore, a method or device “comprising,” “comprising,” or “having,” for example, one or more steps or elements, has one or more steps or elements, but is not limited to having only one or more elements. The terms “first”, “second”, etc. in the description and claims of this application, as well as in the above graphics, are used to distinguish different objects and not to describe a specific order or primary-minor relationship. In addition, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying the relative importance or indirectly indicating the number of technical features identified. Thus, the features defined by the terms “first” and “second” may explicitly or implicitly include one or more features. As used herein, the meaning of "multiple" is two or more unless otherwise indicated.

[065] As used herein, it is to be understood that the orientation or relative positions indicated by terms such as "center", "transverse", "length", "width", "top", "bottom", "front"; “rear”, “left”, “right”, “vertical”, “horizontal”, “upper”, “lower”, “inner”, “outer”, “axial direction”, “radial direction”, “circumferential direction” ", etc., are based on the orientation or relative position shown in the accompanying graphics and are intended only to facilitate the description of this application and to simplify the description and not to indicate or imply that the device or element must have a particular orientation or be designed and operated in a particular orientation, and therefore will not be interpreted as limiting this application.

[066] It should be noted that in the description of this application, unless expressly defined or otherwise indicated, the terms “installation”, “connecting”, “connection” and “attachment” should be understood in a broad sense: for example, they can be a fixed connection, detachable connection or integrated connection; and they may be a direct connection or they may be an indirect connection through an intermediate element, or they may be a connection between the internal parts of two elements. One skilled in the art may understand the specific meanings of the above terms in this application according to particular circumstances.

[067] The expression “embodiments” as used herein means that descriptions of specific features, structures and characteristics, in combination with embodiments, are included in at least one embodiment of this application. The expression in different places in the description does not necessarily refer to the same embodiment or to a separate or alternative embodiment to the exclusion of another embodiment. Those skilled in the art will appreciate, both explicitly and implicitly, that the embodiment described herein may be combined with another embodiment.

[068] As mentioned above, it should be emphasized that when the term “comprise/include” is used in this specification, it is used to clearly indicate the presence of the claimed features, integers, steps or nodes, but does not exclude the presence or addition of one or more others features, integers, stages, components or groups thereof. As used herein, singular forms also include plural forms unless the context clearly indicates otherwise.

[069] The singular forms used herein can mean one, but can also mean “at least one” or “one or more.” The term "about" generally means plus or minus 10%, or more specifically, plus or minus 5% of said value. The term “or” as used in the claims means “and/or” unless it is clearly stated that it only refers to an alternative solution.

[070] In this application, the term "and/or" is only an association relation describing related objects, which means that there may be three relations, for example, A and/or B can represent three situations: A exists alone, A and B both exist , and only B exists. In addition, the "/" symbol in this application generally indicates that the related objects before and after the symbol are in an "or" relationship.

[071] The battery mentioned in the art can be divided into a primary battery and a rechargeable battery depending on whether it is rechargeable. A primary battery (primary cell battery) is also called a "disposable" battery and a voltaic cell because once its charge is exhausted, it cannot be recharged but can only be discarded. A rechargeable battery is also called a secondary battery (secondary cell battery), secondary cell or rechargeable battery. The rechargeable battery has different production material and process compared to the primary battery and has the advantage that it can be used repeatedly after charging. The output current capacity of a rechargeable battery is higher than that of most primary batteries. Currently, the most common types of rechargeable batteries are: lead-acid battery, nickel-metal hydride battery and lithium-ion battery. The lithium-ion battery has the advantages of light weight, large capacity (1.5-2 times that of a nickel-metal hydride battery of the same weight), no memory effect, etc., and has a very low self-discharge rate , so even if its price is relatively high, it is still widely used. Nowadays, lithium-ion battery is also widely used in electric vehicles and battery hybrid vehicles. The capacity of a lithium-ion battery for this purpose is relatively small, but it has a relatively large output current and charging current, and a relatively long service life, although the costs are relatively high.

[072] The battery described in the embodiments of the present application refers to a rechargeable battery. In the following, a lithium-ion battery will be taken as an example to describe the embodiments disclosed in the present application. It should be understood that the embodiments disclosed herein are applicable to any other suitable types of rechargeable batteries. The battery mentioned in the embodiments disclosed herein can be directly or indirectly applied to a suitable device to power the device.

[073] A battery referred to in the embodiments disclosed herein refers to a single physical module containing one or more battery cells to provide a given voltage and capacity. The battery cell is the basic unit in the battery and can be generally divided according to the packaging method into: cylindrical battery cell, prismatic battery cell and stacked battery cell. The following description will mainly refer to the prismatic battery cell. It should be understood that the embodiments described below are also applicable to a cylindrical battery cell or a stacked battery cell in certain aspects.

[074] The battery cell includes a positive sheet electrode, a negative sheet electrode, an electrolyte solution, and an insulating film. The operation of a lithium-ion battery cell is generally based on the movement of lithium ions between a positive sheet electrode and a negative sheet electrode. For example, a lithium-ion battery cell uses an integrated lithium compound as the electrode material. Currently, the main common positive electrode materials used for lithium-ion batteries are: lithium cobalt oxide ( _LiCoO2 ), lithium manganate ( _LiMn2O4 ), lithium nickelate ( _{LiNiO2 )} and lithium iron phosphate (LiFePO ₄ ). An insulating film is provided between the positive sheet electrode and the negative sheet electrode to form a thin film structure with three layers of materials. The thin film structure is usually formed into an electrode assembly of the desired shape by winding or deposition. For example, the thin film structure with three layers of material in a cylindrical battery cell is wound onto a cylindrical electrode assembly, whereas in prismatic battery cells the thin film structure is wound or deposited onto an electrode assembly that is approximately cubic in shape.

[075] In common battery cell designs, the battery cell includes a battery box, an electrode assembly, and an electrolyte solution. The electrode assembly is housed in the battery box of the battery cell. The electrode assembly contains a positive sheet electrode, a negative sheet electrode and an insulating film. The insulating film material may be PP or PE, etc. The electrode assembly may have a spiral structure or a multi-layer structure. The battery box contains a housing and a cover plate. The housing contains a housing chamber formed by a plurality of walls, and an opening. The closing plate is located in the opening to close the accommodating chamber. In addition to the electrode assembly, the housing chamber also contains an electrolyte solution. Each of the positive sheet electrode and the negative sheet electrode in the electrode assembly includes an electrode terminal. Specifically, the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer forms a coating on the surface of the positive electrode susceptor, and the positive electrode susceptor not coated with the positive electrode active material layer protrudes from the positive electrode susceptor coated with the positive electrode active material layer and is used as a positive electrode terminal. The positive electrode current collector material may be aluminum, and the positive electrode active material may be lithium cobalt mixed oxides, lithium iron phosphate, tertiary lithium manganate or lithium manganate, etc. The negative electrode sheet contains a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer forms a coating on the surface of the negative electrode susceptor, and the negative electrode susceptor not covered by the negative electrode active material layer protrudes from the negative electrode susceptor coated with the negative electrode active material layer and is used as a negative electrode terminal. The current collector material of the negative electrode may be copper, and the active material of the negative electrode may be carbon or silicon, etc. To prevent melting when passing a large current, there are a plurality of positive electrode terminals assembled together, and there are a plurality of negative electrode terminals assembled together . The electrode terminals are electrically connected to electrode clamps located outside the battery cell through connecting elements. Electrode clamps usually include a positive electrode clamp and a negative electrode clamp. For prismatic battery cells, electrode clamps are usually provided on a portion of the cover plate. A plurality of battery cells are connected together in series and/or in parallel via electrode clamps so that they can be used in a variety of applications.

[076] In some high power applications, such as electric vehicles, the battery application includes three levels: battery cell, battery module, and battery pack. A battery module is formed by electrically connecting a number of battery cells together and placing them in a frame to protect the battery cells from external influences, heat, vibration, etc. A battery pack represents the final state of the battery system installed in an electric vehicle. The battery pack typically includes a housing for packaging one or more battery cells. The casing can prevent liquid or other foreign objects from affecting the charging or discharging of the battery cell. The casing usually consists of a cover piece and a casing shell. Most current battery packs are manufactured by mounting various control and protection systems, such as a battery management system (BMS), and a thermal management component on one or more battery modules. With the development of battery technology, the battery module layer can be eliminated, that is, a battery pack can be formed directly from battery cells. This improvement allows the battery system to increase mass energy density and volumetric energy density while significantly reducing the number of parts. The battery mentioned in the present application includes a battery module or a battery pack.

[077] For the battery cell, the main safety hazards come from the charging and discharging processes, and a design suitable for ambient temperatures is required. To effectively prevent unnecessary losses, at least triple protection measures are generally taken for the battery cell. In particular, the protective measures include at least a switching element, an appropriately selected insulating film material and a pressure relief mechanism. A switching element refers to an element that can stop charging or discharging a battery when the temperature or resistance in the battery cell reaches a certain threshold value. The insulation film is designed to isolate the positive sheet electrode from the negative sheet electrode, and can automatically eliminate micron-scale (or even nano-scale) micropores attached to the insulation film when the temperature reaches a certain value, which prevents lithium ions from passing through the insulation film and internal reaction battery is terminated.

[078] A pressure relief mechanism refers to an element or component that can be activated when the internal pressure or temperature of a battery cell reaches a predetermined threshold value to relieve internal pressure and/or internals. The pressure relief mechanism is also called anti-explosion valve, air valve, pressure relief valve or safety valve, etc. "Actuating" as referred to in this application means that the pressure relief mechanism operates or is actuated to reduce the internal pressure of the battery cell. . The induced action may include, but is not limited to, cracking, breaking, breaking or opening, etc. of at least a portion of the pressure release mechanism. When the pressure release mechanism is activated, the high temperature and high pressure substances inside the battery cell are released outward from the activated position as emissions. In this way, the pressure in the battery cell can be reduced to a controlled pressure, thereby preventing more serious accidents. Battery cell emissions mentioned herein include, but are not limited to: electrolyte solution, dissolved or separated positive and negative electrode sheets, insulating film fragments, high temperature and high pressure reaction gas, and/or flame and etc. The high temperature and high pressure emissions are released towards the pressure relief mechanism provided in the battery cell, and their power and destructive force are enormous and can even break through one or more structures, such as a cover piece, provided in this direction.

[079] A conventional pressure relief mechanism is typically provided on the battery cell cover plate, that is, located on the same side as the electrode clamps on the cover plate. This configuration has been used in the battery field for many years and has a rationale for its existence. Particularly with respect to the battery cell box, the cover plate, which has a flat plate structure, is machined separately, and the pressure release mechanism can be firmly mounted or formed on the cover plate by a simple and proper process. In contrast, locating the pressure relief mechanism separately on the battery cell body may require more complex processes and result in higher costs.

[080] In addition, the conventional pressure relief mechanism requires a certain amount of bypass space during actuation. The bypass space refers to the space inside or outside the pressure relief mechanism in the actuation direction (ie, in the rupture direction) when the pressure relief mechanism is actuated (for example, when at least a portion of the pressure relief mechanism is ruptured). In other words, the bypass space is the space that allows the pressure relief mechanism to operate. Since the cover plate is thicker than the body, it is easier to form a bypass space when a pressure relief mechanism is provided on the cover plate, thereby facilitating the design and manufacture of battery cells. Specifically, the battery cell body is formed by stamping an aluminum sheet. Compared to the cover plate, the wall thickness of the stamped housing is very thin. On the one hand, the relatively thin wall thickness of the housing makes it difficult to provide a pressure relief mechanism, which requires a bypass space on the housing. On the other hand, the one-piece concave housing design makes it difficult to install the pressure relief mechanism on the housing, which also increases the cost of the battery cell.

[081] In addition, providing a pressure relief mechanism on the housing wall has a serious problem in that the pressure relief mechanism is more easily corroded by the electrolyte solution in the housing. In this case, the pressure relief mechanism becomes corroded due to prolonged contact with the electrolyte solution, and the corrosion may cause premature failure of the pressure relief mechanism, further resulting in safety hazards and increasing maintenance costs for the battery cell. The above issues are all factors that technicians must consider when designing a battery. During the years when the rechargeable battery industry developed rapidly, battery manufacturers took into account costs and various other factors, and the battery cell, especially the pressure relief mechanism of the traction battery cell, was mainly located on the cover plate of the battery cell, namely the pressure relief mechanism and the electrode clamps of the battery cell. elements were located on the same side. It has also become a design concept that battery designers have long adhered to when designing batteries.

[082] In general, changing the design concept of locating the pressure relief mechanism on the cover plate requires researchers and those skilled in the art to overcome various technical challenges and overcome technical biases and cannot be accomplished in one go.

[083] For example, in the case where a battery is used in a vehicle, the fact that the pressure relief mechanism is located on the cover plate of the battery cell creates a problem that emissions from the battery cell burn through the structure above the battery cell, thereby threatening safety personnel in the cabin. To solve this problem, many researchers would easily think of strengthening at least one of the many structures between the battery cell and the cabin to prevent this problem from occurring. That is, due to technical prejudices caused by the existence of the above-mentioned various problems or various other problems, those skilled in the art cannot easily imagine arranging the pressure relief mechanism in a different position of the battery cell to solve this problem. This is also because such a design change is too risky and too difficult. This risk and complexity prevents researchers from placing the pressure release mechanism in a different position of the battery cell.

[084] In order to solve or at least partially solve the above problems and other potential problems of prior art batteries, the present inventors took a different route and proposed a new battery after conducting a lot of research and experimentation. The device to which the battery described in the embodiments of the present application is applicable includes, but is not limited to: a mobile phone, a portable device, a laptop, an electric car, an electric vehicle, a ship, a spacecraft, an electronic toy, a power tool, etc. For example, , space vehicle includes airplane, rocket, space shuttle, spaceship, etc.; an electronic toy includes a fixed or movable electronic toy such as a game console, an electric toy car, an electric toy ship, an electric toy airplane, etc.; and the electric tool includes an electric metal cutting tool, an electric abrasive tool, an electric mounting tool and an electric railway tool such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an electric impact drill, a concrete vibrator and an electric plane.

[085] For example, as shown in FIG. 1, which is a schematic diagram of a vehicle 1 according to an embodiment of the present application, the vehicle 1 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be an electric vehicle, a hybrid vehicle, or a battery extended range vehicle or the like. A battery 10 may be provided inside the vehicle 1. For example, a battery 10 may be provided at the bottom , either at the front or at the rear of the vehicle 1. The battery 10 may be configured to supply power to the vehicle 1. For example, the battery 10 may be used as an operating power source for the vehicle 1. Moreover, the vehicle 1 may also include a controller 30 and a motor 40. The controller 30 is used to control the battery 10 to supply power to the motor 40, for example, to meet the operating power requirements of the vehicle 1 during starting, navigation and driving. In another embodiment of the present application, the battery 10 may be used not only as an operating power source for the vehicle 1, but also as a drive power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power to the vehicle 1.

[086] In FIG. 2 and 3, respectively, show exploded views of a battery according to an embodiment of the present application. As shown in FIG. 2 and 3, the battery 10 includes a plurality of battery cells 20 and a busbar component 12 for electrically connecting the plurality of battery cells 20. In order to protect the battery cells 20 from external liquid or foreign matter or corrosion, the battery 10 includes a casing 11 that is used for packaging a plurality of battery cells 20 and other important components, as shown in FIG. 2 and 3. In some embodiments, the housing 11 may include a cover member 111 and a housing shell 112. The cover member 111 and the housing shell 112 are sealed together to form together in a circumferential manner an electrical chamber 11a for housing a plurality of battery cells 20. In some optional embodiments, the cover member 111 and the housing shell 112 may also be mounted to each other in a non-sealed manner.

[087] In FIG. 4 is an exploded view of a battery cell 20 according to an embodiment of the present application, and FIG. 5 and 6, respectively, show perspective views of the battery cell 20 when viewed from different angles. As shown in FIG. 4-6, in the battery cell 20 of the present application, the battery cell 20 includes a box 21, an electrode assembly 22, and an electrolyte solution, wherein the electrode assembly 22 is housed in a battery box 21 of the battery cell 20. The battery box 21 includes a housing 211 and a cover plate 212. The housing 211 includes a housing chamber 211a formed by a plurality of walls and an opening 211b. A cover plate 212 is located in the opening 211b to cover the accommodating chamber 211a. In addition to the electrode assembly 22, the accommodating chamber 211a also houses an electrolyte solution. Each of the positive sheet electrode and the negative sheet electrode in the electrode assembly 22 is generally provided with an electrode terminal. The electrode terminals generally include a positive electrode terminal and a negative electrode terminal. The electrode terminals are electrically connected to electrode clamps 214 located outside the battery cell 20 through connecting members 23. The electrode clamps 214 typically include a positive electrode terminal 214a and a negative electrode terminal 214b. At least one battery cell 20 of the battery cells 20 in the battery 10 according to the present application includes a pressure relief mechanism 213. In some embodiments, a pressure relief mechanism 213 may be provided on battery cell 20, which may be more susceptible to thermal runaway due to its position in battery 10 among a plurality of battery cells 20. Of course, it is also possible that each battery cell 20 in battery 10 was equipped with a pressure relief mechanism 213.

[088] The pressure relief mechanism 213 refers to an element or component that is activated when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold value to reduce the internal pressure. The threshold value mentioned in this application may be a pressure threshold value or a temperature threshold value. Threshold design varies depending on different design requirements. For example, the threshold may be designed or determined according to the internal pressure or internal temperature of the battery cell 20 that is considered to be dangerous or at risk of going out of control. In addition, the threshold value may depend on the material of one or more of the positive sheet electrode, the negative sheet electrode, the electrolyte solution, and the insulating film in the battery cell 20. That is, the pressure relief mechanism 213 is operable to reduce the internal pressure of the battery cell 20 when the internal pressure or temperature of at least one battery cell 20 where it is located reaches a threshold value, thereby preventing more dangerous accidents. As mentioned above, the pressure relief mechanism 213 may also be called an anti-explosion valve, a gas valve, a pressure relief valve or a safety valve, etc., and may particularly utilize a pressure or temperature sensitive member or structure. That is, when the internal pressure or temperature of the battery cell 20 reaches a predetermined threshold value, the pressure relief mechanism 213 operates or the weakened structure provided in the pressure relief mechanism 213 is damaged to form an opening or channel for reducing the internal pressure. The bus component 12 is also called a busbar or busbar, etc., and is a component that electrically connects a plurality of battery cells 20 in series and/or parallel. After the plurality of battery cells 20 are connected in series and parallel via the busbar component 12, they have a higher voltage, so the side with the busbar component 12 is sometimes called the high-voltage side.

[089] Unlike a conventional battery, the pressure relief mechanism 213 and the tire component 12 in the battery 10 according to the embodiment of the present application are located on different sides of the battery cell 20, respectively. That is, the tire-type component 12 is generally located on the upper side where the cover plate 212 is located, and the pressure relief mechanism 213 of the battery cell 20 according to the embodiment of the present application may be located on any suitable side other than the upper side. For example, in FIG. 7 shows that the pressure relief mechanism 213 is located on the opposite side of the tire component 12. In fact, the pressure relief mechanism 213 may be located on any one or more walls of the housing 211 of the battery cell 20, which will be further explained below.

[090] For example, when the battery 10 is used in an embodiment such as an electric vehicle, the high voltage side with the bus component 12 is typically located on the side adjacent to the cabin due to wiring and other interconnections, and the pressure relief mechanism 213 is located on the other side so that when the pressure relief mechanism 213 is activated, emissions from the battery cell 20 can be released in a direction away from the tire-shaped component 12. In this way, the latent danger of emissions released towards the cabin, which could endanger the safety of the occupants, is eliminated, thereby significantly improving the safety characteristics of the battery 10.

[091] Moreover, since the emissions include various electrically conductive liquids or solids, locating the busbar component 12 and the pressure relief mechanism 213 on one side poses a great risk: the emissions may directly conduct current between the high voltage positive electrode and the negative electrode, causing to a short circuit. A series of interrelated reactions caused by a short circuit can lead to thermal runaway or explosion of all battery cells 20 in battery 10. By locating bus component 12 and pressure relief mechanism 213 on opposite sides, causing emissions to be released in a direction away from component 12 in the form of a bus, the above problems can be prevented, thereby further improving the safety performance of the battery 10.

[092] In FIG. 8 is an enlarged view of part B shown in FIG. 7. As shown in FIG. 8, in some embodiments, battery 10 may also include a thermal management component 13. A thermal management component 13 as used herein refers to a component that can manage and regulate the temperature of the battery cells 20. The temperature control component 13 may include a fluid for controlling and regulating the temperature of the battery cell 20. The fluid here may be a liquid or a gas. Temperature control and regulation may include heating or cooling the plurality of battery cells 20. For example, in the case of cooling or reducing the temperature of the battery cells 20, the thermal control component 13 is configured to receive a cooling fluid to reduce the temperature of the plurality of battery cells 20. In this case, the thermal control component 13 may also be called a cooling component, a cooling system or a cooling plate, etc. The fluid accommodated by the temperature control component 13 may also be called a cooling medium or a cooling fluid, and in particular may be called a cooling liquid or a cooling gas, wherein the cooling medium can be designed to flow in a circulating manner to achieve better temperature control effects. The cooling medium may particularly be water, a mixture of water and ethylene glycol, or air, etc. To achieve effective cooling, the temperature control component 13 is generally attached to the battery cells 20 using thermally conductive silicone, etc. In addition, the temperature control component 13 13 may also be used to heat to increase the temperature of a plurality of battery cells 20. For example, in some areas with lower winter temperatures, heating battery 10 before starting the electric vehicle may improve battery performance.

[093] In some embodiments, the thermal control component 13 may include a pair of thermal conductive plates and a flow path 133 defined between the pair of thermal conductive plates. For convenience of description below, the pair of thermal conduction plates will be referred to as the first thermal conductive plate 131 attached to the plurality of battery cells 20, and the second thermal conductive plate 132 located on the side of the first thermal conductive plate 131 away from the battery cells 20, as shown in FIG. 8. The flow channel 133 is used to accommodate fluid and allow fluid to flow therein. In some embodiments, the thermal control component 13 comprising the first thermal conductive plate 131, the second thermal conductive plate 132, and the flow path 133 may be formed integrally through a suitable process such as blow molding, or the first thermal conductive plate 131 and the second thermal conductive plates 132 are assembled together by welding (such as brazing). In some alternative embodiments, the first thermal conduction plate 131, the second thermal conductive plate 132, and the flow path 133 may also be separately formed and mounted together to form the temperature control component 13.

[094] In some embodiments, the thermal control component 13 may be part of a housing 11 for housing a plurality of battery cells 20. For example, the thermal control component 13 may be a lower portion 112a of a housing shell 112 in the form of a housing 11. In addition to the lower portion 112a, a housing shell 112 includes a side portion 112b. As shown in FIG. 7, in some embodiments, the side portion 112b is formed as a frame structure and may be mounted together with the temperature control component 13 to form the housing shell 112. In this way, the structure of the battery 10 can be made more compact and efficient use of space can be improved, thereby improving energy density.

[095] The temperature control component 13 and the side portion 112b may be sealed together by a sealing member such as an O-ring, a retainer, etc. To improve the sealing effect, a thermal drill self-tapping screw (FDS) may be used in the retainer. Of course, it should be understood that this sealing method is illustrative only and is not intended to limit the scope of protection of the contents of the present application. Any other suitable installation methods are also possible. For example, in some alternative embodiments, the temperature control component 13 may be assembled together using a suitable method, such as adhesive bonding.

[096] In some alternative embodiments, the thermal control component 13 and the side portion 112b may be formed as a single unit. That is, the casing shell 112 in the form of the casing 11 can be formed as a single unit. This formation method can make the housing shell portion 112 stronger and less prone to leakage. In some alternative embodiments, the side portion 112b of the housing shell 112 may also be formed integrally with the cover piece 111. That is, in this case, the cover piece 111 is structured with a bottom opening that can be closed by the temperature control component 13.

[097] In other words, there may be various relationships between the thermal control component 13 and the housing 11. For example, in some alternative embodiments, the thermal control component 13 may not be part of the housing shell 112 of the housing 11, but rather a component mounted on a side of the housing shell 112, facing the closure member 111. This method is more conducive to maintaining the seal of the housing 11. In some alternative embodiments, the thermal control component 13 may also be incorporated within the housing shell 112 by a suitable method.

[098] In some embodiments, when the pressure relief mechanism 213 is actuated, it is necessary to provide a bypass structure 134 on the outside of the battery cell 20 in a position corresponding to the pressure relief mechanism 213, whereby the pressure relief mechanism 213 can be freely actuated to perform its intended purpose. functions. In some embodiments, the bypass structure 134 may be located on the thermoregulating component 13 such that when the thermoregulating component 13 is attached to the plurality of battery cells 20, a bypass chamber 134a may be formed between the bypass structure 134 and the pressure relief mechanism 213. That is, the bypass chamber 134a referred to in the present application refers to a closed cavity formed jointly by the bypass structure 134 and the pressure relief mechanism 213. In this solution for releasing emissions from the battery cell 20, the inlet side surface of the bypass chamber 134a can be opened by operating the pressure release mechanism 213, and the outlet side surface opposite the inlet side surface can be partially damaged by the high temperature and high pressure emissions. thereby forming a release channel for emissions. In some other embodiments, the bypass chamber 134a may be, for example, an open cavity formed jointly by the bypass structure 134 and the pressure relief mechanism 213. The outlet side surface of the open cavity may initially be provided with a discharge channel for their flow out.

[099] As shown in FIG. 8, in some embodiments, the bypass structure 134 formed on the temperature control component 13 may include a bottom bypass wall 134b and a side bypass wall 134c surrounding the bypass chamber 134a. The bypass bottom wall 134b and bypass side wall 134c in the present application are described with respect to the bypass chamber 134a. Specifically, the bottom bypass wall 134b refers to the wall of the bypass chamber 134a opposite the pressure relief mechanism 213, and the side bypass wall 134c is a wall that is adjacent to the bottom bypass wall 134b and is positioned at a predetermined angle to surround the bypass chamber 134a. In some embodiments, the bypass bottom wall 134b may be part of the second thermal conduction plate 132, and the bypass side wall 134c may be part of the first thermal conduction plate 131.

[0100] For example, in some embodiments, the bypass structure 134 may be formed by recessing a portion of the first thermal conduction plate 131 toward the second thermal conduction plate 132 and forming an opening, and fixing the edge of the opening and the second thermal conductive plate 132 together through an appropriate locking method. When the pressure relief mechanism 213 is activated, emissions from the battery cell 20 first enter the bypass chamber 134a. As shown by arrows in bypass chamber 134a in FIG. 8, the emissions will be released outward in directions approximately shaped like a sector.

[0101] Unlike the traditional thermal control component, the thermal control component 13 according to an embodiment of the present application may be damaged when the pressure relief mechanism 213 is activated, causing emissions from the battery cell 20 to pass through the thermal control component 13. An advantage of this configuration is that that high temperature and high pressure emissions from the battery cell 20 can pass through the temperature control component 13 unimpeded, thereby preventing secondary accidents caused by untimely release of emissions and thereby improving the safety performance of the battery 10.

[0102] To allow emissions to pass unimpeded through the temperature control component 13, the temperature control component 13 may be provided with a through hole or a relief mechanism in a position opposite to the pressure relief mechanism 213. For example, in some embodiments, a relief mechanism may be provided on the bottom bypass wall 134b, that is, on the second thermal conductive plate 132. A relief mechanism herein refers to a mechanism that can be actuated by operating the pressure relief mechanism 213 to provide the ability to release at least the emissions from the battery cell 20 through the temperature control component 13. In some embodiments, the release mechanism may also have the same configuration as the pressure release mechanism 213 on the battery cell 20. That is, in some embodiments, the release mechanism may be a mechanism located on the second heat conduction plate 132 and having the same configuration as the pressure relief mechanism 213. In some alternative embodiments, the relief mechanism may also be configured differently from the pressure relief mechanism 213, but be only a weakened structure provided on the bottom bypass wall 134b. For example, the weakened structure may include, but is not limited to: a reduced thickness portion integrated with the bottom bypass wall 134b, a notch (e.g., cross notch 134d shown in FIG. 9), or an easily damaged portion made of an easily damaged material such as like plastic, and mounted on the bottom of the 134b bypass. Alternatively, the reset mechanism may be a temperature-sensitive or pressure-sensitive reset mechanism that is activated when the temperature or pressure so measured exceeds a threshold value.

[0103] In some embodiments, to allow emissions to pass unimpeded through the thermal control component 13, the bypass structure 134 may also be a through hole penetrating the thermal control component 13. That is, the bypass structure 134 may have only a bypass side wall 134c, and a side wall The bypass 134c is a wall with an opening in the form of a through hole. In this case, when the pressure relief mechanism 213 is activated, emissions from the battery cell 20 can be directly released through the bypass structure 134. In this way, generation of secondary high voltage can be more effectively prevented, thereby improving the safety performance of the battery 10.

[0104] In some embodiments, the temperature control component 13 may be further configured to be damaged when the pressure relief mechanism 213 is activated, causing fluid to flow out. The leakage of fluid can quickly lower the temperature of the high temperature and high pressure emissions from the battery cell 20 and extinguish the fire, thereby preventing further damage to other battery cells 20 and the battery 10 itself, leading to more serious accidents. For example, in some embodiments, bypass side wall 134c may also be formed such that it can be easily damaged by emissions from battery cell 20. Because the internal pressure of battery cell 20 is relatively high, emissions from battery cell 20 will be released outward in approximately a cone shape. . In this case, if the contact area between the bypass side wall 134c and the emissions can be increased, the probability of damage to the bypass side wall 134c can be increased.

[0105] For example, in some embodiments, the bypass side wall 134c is configured to form a predetermined internal angle with respect to the direction of the pressure relief mechanism 213 towards the temperature control component 13, and wherein the internal angle is greater than or equal to 15° and less than or equal to 85° . For example, the given interior angle shown in FIG. 8 is approximately 45°. By properly setting the inner corner, the bypass side wall 134c can be more easily damaged when the pressure release mechanism 213 is operated, which further allows the fluid to flow out and come into contact with the emissions, thereby achieving the effect of timely cooling of the emissions. In addition, the predetermined internal angle may also allow the bypass side wall 134c to be formed more easily. For example, a predetermined inside angle may provide a certain casting draft angle, thereby facilitating the production of the bypass side wall 134c and even the entire first heat conduction plate 131.

[0106] In addition, this configuration of the bypass side wall 134c can be applied to the above-described situation where the bypass chamber 134a is provided, and to the situation where the bypass structure 134 is a through hole. For example, in the case where the bypass structure 134 is a through hole, the diameter of the through hole may gradually decrease in the direction of the pressure relief mechanism 213 to the temperature control component 13, and the internal angle formed by the wall of the through hole with respect to the direction of the pressure relief mechanism 213 to the temperature control component 13, greater than or equal to 15° and less than or equal to 85°.

[0107] Of course, it should be understood that the above-mentioned shape of the predetermined internal angle formed by the bypass side wall 134c with respect to the direction of the pressure relief mechanism 213 towards the temperature control component 13 is only illustrative and is not intended to limit the scope of protection of the contents of the present application. Any other suitable design may be possible that may contribute to damage to the bypass side wall 134c when the pressure relief mechanism 213 is operated. For example, in some embodiments, any type of weakened structure may also be provided on the bypass side wall 134c.

[0108] The above embodiments describe the case where the temperature control component 13 has a bypass structure 134. That is, the bypass chamber 134a mentioned in the above embodiments is formed by the bypass structure 134 on the temperature control component 13 and the pressure relief mechanism 213. It should be understood that the above embodiments of the bypass camera 134a are illustrative only and are not intended to limit the scope of protection of the contents of the present application. Any other suitable design or configuration is also possible. For example, in some alternative embodiments, the thermal control component 13 may not include a bypass structure 134. In this case, the bypass chamber 134a may be formed, for example, by a collar formed around the pressure relief mechanism 213 and the temperature control component 13. Moreover, a relief mechanism or weakened structure may be provided on the temperature control component 13 in a position opposite to the pressure relief mechanism 213 so as to allow emissions from the battery cell 20 to pass through the temperature control component 13 and/or rupture through the temperature control component 13, causing fluid to flow out.

[0109] Of course, in some embodiments, bypass camera 134a may not be used. For example, for some pressure relief mechanisms 213 that can be actuated without the need for bypass space, the pressure relief mechanism 213 may be located close to the thermostatic component 13. Such pressure relief mechanism 213 may include, but is not limited to, a temperature-sensing mechanism 213 pressure relief, for example. The temperature-sensitive pressure relief mechanism 213 is a mechanism that is activated when the temperature of the battery cell 20 reaches a threshold to reduce the internal pressure of the battery cell 20. A corresponding alternative is the pressure-sensitive pressure relief mechanism 213. The pressure-sensitive pressure release mechanism 213 is the pressure release mechanism 213 mentioned above. The pressure-sensing pressure relief mechanism 213 is a mechanism that is activated when the internal pressure of the battery cell 20 reaches a threshold value to reduce the internal pressure of the battery cell 20. The pressure relief mechanism 213 may take various forms, and specific improvements to the pressure relief mechanism 213 will be further illustrated below.

[0110] In some embodiments, battery 10 further includes a collection chamber 11b, as shown in FIG. 7 and 8. The collection chamber 11b herein refers to a cavity that collects emissions from the battery cell 20 and the temperature control component 13 when the pressure relief mechanism 213 is operated. The collection chamber 11b is configured to collect emissions and may be compacted or non-compacted. In some embodiments, collection chamber 11b may contain air or other gas. Optionally, the collection chamber 11b may also contain a liquid such as a coolant, or a liquid-retaining component is provided to further reduce the temperature of the emissions entering the collection chamber 11b. In addition, optionally the gas or liquid in the collection chamber 11b flows in a circulating manner. In the case where the bypass chamber 134a is provided as described above, the bypass chamber 134a may be isolated from the collection chamber 11b by the temperature control component 13. The so-called “isolation” herein refers to a separation that may not be sealed. This may be more conducive to the emissions breaking through the bypass side wall 134c, causing fluid to flow out to further reduce the temperature of the emissions and extinguish the fire, thereby improving the safety performance of the battery. Moreover, in the case where the bypass structure 134 is a through hole as described above, the bypass chamber 134a and the collection chamber 11b may communicate with each other. This approach is more conducive to releasing emissions to avoid potential safety hazards caused by secondary high pressure.

[0111] In some embodiments, the collection chamber 11b may also be an open cavity on the outside of the thermal control component 13. For example, in an embodiment in which the thermal control component 13 is used as the bottom shell 112 of the casing 11, emissions from the battery cell 20 can be directly discharged into the space outside the temperature control component 13, that is, outside the casing 11, after passing through the temperature control component 13 to prevent the creation of secondary high pressure. In some alternative embodiments, battery 10 may further include a security element 115, as shown in FIG. 7. The security element 115 herein refers to a component located on a side of the temperature control component 13 away from the battery cell 20 to provide protection for the temperature control component 13 and the battery cell 20. In these embodiments, the collection chamber 11b may be located between the security element 115 and thermoregulating component 13.

[0112] In some embodiments, the security element 115 may be a portion mounted at the bottom of the housing 11 to perform a security function. This approach helps promote more diverse designs for battery 10 application areas, such as electric vehicles. For example, for some electric vehicles, in order to reduce manufacturing costs and thus the price of the final product, the protective element 115 may not be provided without affecting its use. Users can choose whether to install the security element 115 according to their needs. In this case, the collection chamber 11b constitutes the above-mentioned open cavity, and emissions from the battery cell 20 can be directly discharged to the outside of the battery 10.

[0113] In some embodiments, the security element 115 may be a lower portion 112a of the housing shell 112 of the housing 11. For example, a thermal control component 13 may be mounted as a lower portion 112a of the housing shell 112 with the protective element 115. The thermal control component 13 is mounted with protective element 115 with a gap therebetween to form a collection chamber 11b. In this case, the collection chamber 11b can be used as a buffer chamber for emissions from the battery cell 20. When at least one of the temperature, volume or pressure of the emissions in the collection chamber 11b reaches a predetermined level or threshold value, the protective element 115 may be partially damaged to timely reduction of pressure in the collection chamber 11b. In some alternative embodiments, alternatively or additionally, a sealing element (such as an O-ring, sealing material, or the like) may be provided between the security element 115 and the temperature control component 13 to seal the collection chamber 11b, wherein the sealing element may also partially be damaged when at least one of the temperature, volume or pressure of the emissions in the collection chamber 11b reaches a predetermined level, or threshold value, to timely reduce the pressure in the collection chamber 11b to avoid secondary damage.

[0114] In some alternative embodiments, the security element 115 may also be integrally formed with the temperature control component 13. For example, on the outside of the temperature control component 13, a thermal protection element 115 is also integrally formed, and there is a thermal protection element 115 between the security element 115 and the temperature control component 13 a gap for forming the collection chamber 11b. The protective element 115 may be provided with a weakened structure, and thus, when the temperature, volume or pressure of emissions in the collection chamber 11b reaches a predetermined level or threshold value, the protective element 115 can be partially damaged to timely reduce the pressure of the collection chamber 11b. With this approach, the number of components can be further reduced and thus installation time and installation costs can be reduced.

[0115] In FIG. 9-12 respectively show different angle views, a cross-sectional view, and an exploded view of the temperature control component 13 according to some embodiments of the present application. As shown in these figures, in some embodiments, a semi-recessed structure corresponding to the flow path 133 may be formed on the first thermal conduction plate 131 and the second thermal conductive plate 132, respectively, with the semi-recessed structures of the first thermal conductive plate 131 and the second thermal conductive plate 132 aligned with each other. friend. When mounting the first thermal conduction plate 131 and the second thermal conductive plate 132 with each other, the semi-recessed structures of the first thermal conductive plate 131 and the second thermal conductive plate 132 are combined into a flow path 133, and ultimately a temperature control component 13 is formed.

[0116] Of course, it should be understood that the above-described specific design of the temperature control component 13 is merely illustrative and is not intended to limit the scope of the present application. Any other suitable design or configuration is also possible. For example, in some alternative embodiments, at least one of the first thermal conduction plate 131, the second thermal conductive plate 132, and the flow path 133 may be omitted. For example, the second thermal conductive plate 132 may be omitted. That is, in some embodiments, the thermal control component 13 may include only the first thermal conductive plate 131 and a flow path 133 located on or integrated into one side thereof.

[0117] From the above description, it can be seen that in some embodiments, in the case where the pressure relief mechanism 213 is located on the other side with respect to the tire-type component 12 of the battery cell 20, a dual-chamber structure can be formed after adjusting the structure. "Dual chamber" refers to the bypass chamber 134a between the pressure relief mechanism 213 of the battery cell 20 and the bypass structure 134, as well as the aforementioned collection chamber 11b, as shown in FIG. 8. The dual-chamber structure can effectively ensure a controlled, orderly and timely release of emissions from the battery cell 20 when the pressure relief mechanism 213 is activated. Additionally, in some embodiments, the bypass chamber 134a may also be damaged to allow fluid to flow out of the temperature control component 13, cool the emissions from the battery cell 20, and extinguish a fire, thereby rapidly reducing the temperature of the emissions from the battery cell 20 and thus reducing battery safety characteristics are improved 10.

[0118] Additionally, by positioning the pressure relief mechanism 213 on the other side relative to the busbar component 12 of the battery cell 20, emissions from the battery cell 20 will not or will only flow in a small amount into the electrical chamber 11a formed in the housing 11. This is especially advantageous for ensuring electrical safety and preventing short circuits between the components 12 in the form of a bus. Based on this separate structure of the electric chamber 11a and the above-mentioned two-chamber structure, the closing member 111 of the casing 11 can be configured to be closer to the busbar component 12. The reason for this is that the emissions from the battery cell 20 will be discharged into the bypass chamber 134a and/or the collection chamber 11b, and the electric chamber portion 11a may not be provided with a path for circulating the emissions, so the closing part 111 may be closer to the component 12B in the form of a tire, even in contact with the component 12 in the form of a tire. This may make the upper structure of the battery 10 more compact and increase the effective space of the battery 10 to accommodate the battery cells 20, thereby increasing the volumetric energy density of the battery 10.

[0119] In particular, in the conventional battery 10, especially when a ternary lithium ion battery cell is used in the battery cell 20, without mentioning the contact between the cover piece 111 and the busbar component 12, it is essentially impossible to set the distance between them as equal less than 7 mm. The reason for this is that in the conventional battery cell 20, the tire component 12 and the pressure relief mechanism 213 are both provided on the same side of the battery cell 20 to enable the pressure relief mechanism 213 to be opened normally when the pressure relief mechanism 213 is operated. whereby the emissions from the battery cell 20 can be released and circulated unhindered, the distance between the tire-shaped component 12 and the cover member 111 being generally set to be 7 mm or greater than 7 mm to ensure the safety of the battery 10.

[0120] Unlike the conventional battery 10, after providing a pressure relief mechanism 213 and a tire component 12 on different sides of the battery cell 20, since the emissions from the battery cell 20 are released into the bypass chamber 134a and/or the collection chamber 11b, there is no need in the allotted position required to provide the pressure relief mechanism 213 on the cover plate of the battery cell 20, and the electric chamber portion 11a may optionally be provided with an emission circulation path, so the cover member 111 and the tire component 12 may be arranged adjacent to each other. each other, and the distance between them may be less than 2 mm, as shown in FIG. 14. This gap size is very favorable for the development of battery technology. In particular, with the development of battery technology up to now, it would be extremely difficult to reduce the size of each structure and component of the battery 10 except for the space to accommodate the battery cells 20 by 1 mm and at the same time ensure safety. Therefore, by arranging the pressure relief mechanism 213 and the tire component 12 on different sides of the battery cell 20, the compactness of the structure of the battery 10 can be greatly improved, and the effective accommodating space 111a for the battery cells can be intelligently increased, thereby increasing the volumetric energy density of the battery 10.

[0121] In some embodiments, the tire component 12 may also be integrated into the cover piece 111. In FIG. 15-18 show schematic illustrations of tire-shaped components 12 integrated into the cover piece 111. As shown in the figures, in some embodiments, the cover piece 111 may include a receiving space 111a. The accommodating space 111a can accommodate the components 12 in the form of a tire. In some embodiments, the accommodating space 111a may be through-holes formed in the cover member 111. The tire-type components 12 can be secured to the through-holes using an appropriate method. For example, the tire components 12 may be installed in a mold prior to molding the cover piece 111, whereby after the cover piece 111 is formed, the tire components 12 may be incorporated into the cover piece 111, as shown in FIG. 18.

[0122] It should be understood that the busbar components 12 are located in the cover member 111 in positions corresponding to the electrode clamps 214 of the battery cells 20. Once the battery cells 20 are in place in the housing 111, the cover member 111 can be mounted directly to the housing shell 112, and then the busbar components 12 are electrically connected to the electrode clamps 214 of the battery cells 20 by welding such as laser welding or ultrasonic welding and other fixation methods. Subsequently, the insulating portion 113 attached to the cover member 111 is used to at least cover the tire-shaped components 12, thereby forming a packaged casing 11.

[0123] In some embodiments, the insulating portion 113 may have a sheet-like structure or a thin plate-like structure, and the material of the insulating portion 113 may be PP, PE, PET, etc. In some other embodiments, the insulating portion 113 may also be insulating glue or insulating paint, etc.

[0124] In some embodiments, the insulating portion 113 may be applied to or mounted on the cover member 111. For example, after electrically connecting the busbar components 12 to the electrode terminals 214 of the battery cells 20, an insulating portion 113 may be formed by coating a portion of the cover piece 111 having the busbar component 12 with an insulating layer. In some alternative embodiments, the insulating portion 113 may also be a component mounted on the cover member 111 to cover at least the insulating portion 113. The insulating portion 113 and the cover member 111 may be sealed to provide a leak-tight seal to the housing 11. the coated layer or mounted insulating portion 113 may also cover the entire outer surface of the cover piece 111.

[0125] In some embodiments, the insulating portion 113 may also be formed integrally with the cover piece 111. For example, the insulating portion 113 may be formed as a portion of the cover piece 111 protruding from the outer surface, and a receiving space 111a is formed within the portion to accommodate 12 components in the form of a tire. In these embodiments, the tire-type components 12 may also be built into the cover piece 111 by molding, etc., or may be built into the cover piece 111 at a later time after the cover piece 111 is formed. In the last mentioned case, the tire-type components 12 the bars may be electrically connected to the electrode terminals 214 of the battery cells 20 by resistance welding, etc.

[0126] For a conventional battery 10, this method of integrating the components 12 as a bus into the cover piece 111 is essentially impossible. The reason for this is that, as mentioned above, the pressure relief mechanism 213 of the battery cell 20 in the conventional battery 10 is provided on the same side as the tire component 12, if the tire components 12 are built into the cover piece 111, emissions from The battery cells 20 have nowhere to circulate, causing more serious safety accidents.

[0127] According to the configuration of integrating the components 12 as a bus into the cover piece 111 described in the above embodiment, the volume of the battery 10 can be greatly reduced without affecting the safety of the battery 10 or even improving the safety of the battery 10, thereby increasing the bulk density energy of the battery 10. Additionally, this approach can also reduce the complexity of mounting the battery 10, thereby reducing installation costs. In addition, by integrating the components 12 in the form of a busbar into the cover piece 111, it is also possible to realize at least a partial arrangement of the battery control unit 15 outside the aforementioned electrical chamber 11a.

[0128] In particular, for a conventional battery, the components in the electrical chamber 11a need to be properly connected before the cover piece 111 and the casing shell 112 are sealed. The connection includes a connection between the busbar components 12 and the electrode clamps 214 and a connection between the battery control unit 15 and the busbar components 12. That is, in a conventional battery, the battery control unit 15 is packaged in a sealed case 11. However, the battery control unit 15 is a vulnerable component compared with other components. It is necessary to open the sealed casing 11 to replace the battery control unit 15 after it is damaged or malfunctions. This operation is time-consuming and labor-intensive and also affects the tightness of the casing 11.

[0129] Unlike a conventional battery, in the case where the busbar component 12 is built into the cover piece 111, the battery control unit 15 can be at least partially located outside the electrical chamber 11a. For example, at least one of the electrical connecting parts 151 between the control part (not shown) of the battery control unit 15 and the bus component 12 may also be built into the cover part 111, as shown in FIG. 16. The control part can be housed in a housing part integrated with the cover part 111. In this case, after failure of the control part or the electrical connection part 151 of the battery control unit 15, repair can be carried out without opening the casing 11. Thus, this can ensure that the sealing the housing 11 and, at the same time, reducing maintenance costs, thereby improving the safety characteristics and user experience of the battery. In some embodiments, the electrical connection portion 151, for example, may include, but is not limited to, at least one of the following: a printed circuit board (such as a printed circuit board or flexible printed circuit board), a cable, a conductor, a conductive sheet, or a conductive bar, and etc. The electrical connection portion 151 is used for electrical connection with the plurality of battery cells 20 for the purpose of receiving temperature or voltage signals of the plurality of battery cells 20.

[0130] The concept of the present application is mainly described by taking as examples the pressure relief mechanism 213 and the temperature control component 13, which are provided on the lower part of the battery cell 20 (i.e., on the side of the battery cell 20 opposite the tire component 12). It should be understood that the pressure relief mechanism 213 and the temperature control component 13 may also be located on the side of the battery cell 20 regardless of whether the battery cell 20 is placed in the housing 11 in a vertical, horizontal, transverse (stacked) or inverted manner, as shown in FIG. 19-26. The term "vertical" as used herein means that the battery cell 20 is mounted in the housing 11 such that the cover plate 212 is adjacent and approximately parallel to the cover piece 111, as shown in FIG. 2-7, 15-17, 19 and 23. Likewise, the term “horizontally disposed” or “transversely disposed” means that the battery cell 20 is mounted in the housing 11 such that the cover plate 212 is approximately perpendicular to the cover member 111, as shown in fig. 20-22. The term "inverted" means that the battery cell 20 is mounted in the housing 11 such that the cover plate 212 is adjacent and approximately parallel to the bottom of the housing shell 112.

[0131] To cover these cases, the following description introduces the concepts of the first wall and second wall of the battery cell 20 and the support component 16 of the battery 10. The first wall and the second wall are two intersecting walls in the battery cell 20. Until the first wall and the second wall may intersect, they may be any suitable wall of the aforementioned battery cell 20, including a side wall, a bottom wall, and a cover plate 212. The "support component 16" of the battery 10 refers to a component configured to support the battery cell 20, the support component 16 may be the aforementioned thermal control component 13, a lower portion 112a of the housing shell 112, or a protective member 115, etc. Of course, the support component 16 may also be a component located only on the inner side of the housing shell 112 to support the battery cell 20.

[0132] In some embodiments, the pressure relief mechanism 213 may be located on the first wall of the battery cell 20, and the temperature control component 13 is attached to the first wall, as shown in FIG. 23 and 24. In some embodiments, the pressure relief mechanism 213 may be positioned such that its outer surface is flush with the outer surface of the first wall. This flush arrangement is more conducive to attachment between the first wall and the temperature control component 13. In some alternative embodiments, the outer surface of the pressure relief mechanism 213 may also be positioned such that it is recessed into the outer surface of the first wall. This recessed structure may provide a portion of the bypass space, thereby, for example, reducing or even lowering the bypass structure 134 in the temperature control component 13.

[0133] Additionally, a support component 16 is attached to the second wall to support the battery cell 20 in a direction opposite to the direction of gravity. It can be seen that the pressure relief mechanism 213 and the temperature control component 13 are provided on the first wall of the battery cell 20, which is parallel to the direction of gravity, regardless of how the battery cell 20 is arranged in the case 11. For example, in the case where the battery cell 20 is placed in the housing 11 in a vertical or inverted manner, the first wall is a side wall of the battery cell 20, whereas in the case where the battery cell 20 is placed horizontally in the housing 11, the first wall may be a cover plate 212 or a wall opposite the cover plate 212 For ease of description, some embodiments are described below for the pressure relief mechanism 213 and the temperature control component 13, which are located on the side or first wall of the battery cell 20.

[0134] In those embodiments where the pressure relief mechanism 213 and the temperature control component 13 are located on the side of the battery cell 20, the design features and properties of the temperature control component 13 are also the same as those of components located at the bottom of the battery cell 20, such as bypass chamber 134a, through hole, etc., which will not be further described below. Additionally, in the case where the pressure release mechanism 213 and the temperature control component 13 are located on the side of the battery cell 20, the battery 10 may also include a collection chamber 11b. Moreover, the collection chamber 11b is configured to collect emissions from the battery cell 20 and the temperature control component 13 when the pressure relief mechanism 213 is operated.

[0135] In some embodiments, the collection chamber 11b may be comprised of at least a portion of the side portion 112b of the housing shell 112, as shown in FIG. 24 and 25. For example, the side portion 112b may be formed as a hollow structure, and the hollow structure constitutes the collection chamber 11b, which can make the battery 10 lightweight while making the battery 10 more compact. The thermal control component 13 may be located between the side portion 112b and the battery cell 20. In some embodiments, the portion of the side portion 112b corresponding to the bypass structure 134 may be provided with the above-mentioned weakened structure through hole (through hole 114a, as shown in FIG. 25). or a release mechanism such as the pressure release mechanism 213 so that emissions from the battery cell 20 are easily released into the collection chamber 11b.

[0136] Additionally or alternatively, in some embodiments, the collection chamber 11b may also be comprised of a strip 114 positioned to extend between the cover member 111 and the housing shell 112. A beam 114 extends from the bottom of the casing shell 112 to the cover piece 111 in a direction perpendicular to the bottom. The thermal control component 13 may be located between the strip 114 and the battery cell 20. In some embodiments, the strap 114 may be of a hollow structure, and the hollow space of the strip 114 may constitute a collection chamber 11b. In some embodiments, the portion of the bar 114 corresponding to the bypass structure 134 may be provided with the above-mentioned weakened structure, a through hole (through hole 114a shown in FIG. 25), or a relief mechanism, such as a pressure relief mechanism 213, to allow emissions from the battery element 20 easily entered the collection chamber 11b.

[0137] In some embodiments, the side portion 112b of the housing shell 112 and the strap 114 may be a single component.

[0138] In some embodiments, the support component 16 may also include an additional collection chamber (not shown in the figures), and the additional collection chamber may be in communication with the collection chamber 11b to accommodate emissions from the battery cell 20. The additional collection chamber may also provide a larger area cooling for the emissions, whereby the emissions can be effectively cooled in the battery 10 before being released, thereby improving the safety characteristics of the battery 10.

[0139] Additionally, in some embodiments, the support component 16 may also include an additional flow channel (not shown in the figures) that may be in communication with the flow channel 133 in the temperature control component 13 so that fluid can flow in the flow channel 133. flow of the temperature control component 13 and in the additional flow path of the support component 16. Thus, the battery cell 20 can be cooled at the bottom and side, thereby improving the cooling result of the battery cell 20. The communication between the additional flow path and the flow path 133 can be manageable. For example, when the temperature of the battery cell 20 is at a normal level, communication between the additional flow path and the flow path 133 may be blocked. When the temperature of the battery cell 20 reaches a certain degree, or a predetermined threshold value, for example, when the temperature reaches 50 °C, the additional flow path and the flow path 133 can be communicated so that the fluid can cool the battery cell 20 in multiple directions of the battery cell 20, thereby improving the cooling result.

[0140] In some embodiments, the thermal control component 13 may also be combined with the support component 16. For example, the thermal control component 13 and the support component 16 form an L-shaped, T-shaped, or U-shaped structure, etc. In this way, improvements can be made structural strength of the battery. In some alternative embodiments, the support component 16 may also be suitably attached to the temperature control component 13. This approach facilitates the production of the support component 16 and the temperature control component 13 and thus reduces manufacturing costs.

[0141] To improve the temperature control function of the temperature control component 13, regardless of whether the temperature control component 13 is located on the side or the bottom of the battery cell 20, the temperature control component 13 and the battery cell 20 can be bonded to each other using thermally conductive silicone. The thermally conductive silicone can not only provide the bonding force required by combining the temperature control component 13 and the battery cell 20, but can also facilitate the conduction of heat between the temperature control component 13 and the battery cell 20 to help regulate the temperature of the battery cell 20 by the temperature control component 13.

[0142] To prevent the actuation of the pressure relief mechanism 213 from being affected by the use of adhesives, such as thermally conductive silicone, between the thermostatic component 13 and the pressure relief mechanism 213, in some embodiments, the battery 10 may also include an insulating component 14. In FIG. 27 is a perspective view of the insulating component 14, FIG. 28 is an exploded view of the insulating component 14 and the temperature control component 13 not assembled with each other, and FIG. 29 is a perspective view of the insulation component 14 and the temperature control component 13, which are attached to each other. It can be seen that the insulating component 14 can be attached to the temperature control component 13 prior to the application of the adhesive and forms thereon specific design features corresponding to at least the pressure relief mechanism 213 or the bypass structure 134. Thus, when applying the adhesive coating, little or no adhesive will be applied to the area corresponding to the pressure relief mechanism 213 or the bypass structure 134 of the temperature control component 13 to allow the pressure relief mechanism 213 to be activated without blocking the structure 134 bypass. Additionally, the use of the insulating component 14 can also increase the speed and accuracy of application of the adhesive coating, as well as save production time and costs.

[0143] It should be noted that the above is only an example to describe the possibility of positioning the insulating component 14 between the battery cell 20 and the temperature control component 13 to prevent adhesive from being applied between the temperature control component 13 and the pressure relief mechanism 213. It should be understood that any other suitable component may be coupled to the battery cell 20, such as the aforementioned support component 16. That is, the insulating component 14 may be used for any component that requires an adhesive to be bonded to the battery cell 20. For ease of description, the component described below , requiring an adhesive to be bonded to the battery cell 20 will be referred to as an “attachment component.” An attachment component refers to a component attached to the battery cell 20 using an adhesive, which may include, but is not limited to, a temperature control component 13, a support component 16, etc. The adhesive may be thermally conductive silicone, epoxy resin adhesive, polyurethane adhesive, etc. By providing an insulating component 14 between the attachment component and the battery cell 20, adhesive can be prevented from being applied between the attachment component and the pressure release mechanism 213.

[0144] In some embodiments, the insulating component 14 may include a body 141 and a projection 142. The body 141 is suitable for attachment to the attachment component. The protrusion 142 projects outward from the surface of the main part 141, and the protrusion 142 serves to align with the pressure relief mechanism 213 in the direction of the protrusion if the main part 141 is attached to the attachment component and the peripheral size of the protrusion 142 is greater than or equal to the size of the pressure relief mechanism 213. Thus, when applying adhesive, the adhesive coating machine can be directed to carry out the adhesive coating operation according to a predetermined path, and it can also ensure that no adhesive is applied at the position where the pressure release mechanism 213 is located, thereby enabling efficient and accurately applying the adhesive in the proper position.

[0145] In some embodiments, the height of the projection 142 may be greater than or equal to the predetermined adhesive application height, which may ensure that little or no adhesive enters the area between the pressure release mechanism 213 and the attachment component when the adhesive is applied, such as is advantageous especially in the case where a bypass structure 134 is provided in the attachment component. Additionally, the projection 142 is also configured so that it can be compressed to the same height as the adhesive if the battery cell 20 is attached to the attachment component, thereby providing a connection between the attachment component and the battery cell 20. Additionally, the insulating component 14 should also be made of a material that is easily damaged by emissions from the battery cell 20, such that the emissions can easily break through the insulating component 14. That is, the protrusion 142 or the entire insulating component 14 can be made of a material or structure that is flexible and characterized by low penetration strength. For example, in some embodiments, the insulating component 14 may be made of a thermoplastic material using an intumescent process. Additionally, the wall thickness of the insulating component 14 may be from 0.01 mm to 0.05 mm.

[0146] Since a plurality of battery cells 20 are typically attached to an attachment component in rows, in some embodiments, the plurality of insulating components 14 for a plurality of battery cells 20 may be formed integrally in a single sheet. For example, insulating components 14 arranged in one or more rows can be manufactured as a single unit by forming a blister. Moreover, the positions of the plurality of insulating components 14 arranged in rows respectively correspond to the positions of the pressure relief mechanism 213 of the plurality of battery cells 20, so that the insulating components 14 can be reliably configured to protect the pressure relief mechanism 213 for attaching the battery cells 20 to the attachment component.

[0147] Of course, it should be understood that the above embodiments of the insulating component 14, which use the projection 142 to prevent the application of adhesive between the attachment component and the pressure relief mechanism 213, are only schematic and are not intended to limit the scope of the present application. and that any other suitable configuration or design is also possible. For example, in some alternative embodiments, the insulation component 14 may also be provided without the projection 142, but only with a special coating in a location corresponding to the pressure relief mechanism 213 to prevent the deposition of adhesive between the attachment component and the pressure relief mechanism 213.

[0148] It can be seen that an insulating component 14 may be used between the attachment component and the battery cell 20 to prevent adhesive from being applied between the attachment component and the pressure release mechanism 213 . Additionally, more modern automatic means can be configured to direct the adhesive coating operation so that the operator does not need to be careful while operating. Thus, the adhesive application efficiency is effectively improved, which reduces the installation cost of the battery 10. At the same time, the adhesive application between the attachment component and the pressure relief mechanism 213 can be effectively prevented, which is conducive to efficient driving of the pressure relief mechanism 213, as well as preventing glue from blocking the bypass structure 134 that defines the bypass chamber 134a, thereby improving the safety of the battery 10.

[0149] The aforementioned pressure relief mechanism 213 can take a variety of forms. For example, in some embodiments, as shown in FIG. 30 and 31, the pressure relief mechanism 213 located on the battery cell 20, in embodiments of the present application may include: a connection block 2131, a pressure relief sheet 2132, a first protective sheet 2133, a compression ring 2134, and a compression structure 2135. In particular, a connection block 2131 includes a cutout 2131a and a first boss 2131b, wherein the first boss 2131b is connected to the inner wall of the cutout 2131a and extends in the direction of the axis of the cutout 2131a; a pressure relief sheet 2132 is located on one side of the first boss 2131b, a first protective sheet 2133 is located on the other side of the first boss 2131b remote from the pressure relief sheet 2132, the pressure relief sheet 2132 is operable to reduce the internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value, and the first protective sheet 2133 is configured to protect the pressure relief sheet 2132; for a side of the first bulge 2131b that is provided with the first protective sheet 2133, a side of the first protective sheet 2133 remote from the first bulge 2131b is provided with a compression ring 2134 for compressing the first protective sheet 2133; and the compression structure 2135 is connected to the connection block 2131 and can be compressed in the axial direction of the cutout 2131a to compress the compression ring 2134. In FIG. 30 is a schematic view of the compression structure before compression, and FIG. 31 is a schematic view of the compression structure after compression.

[0150] Additionally, given that the pressure relief mechanism 213 is mounted on the battery cell 20, the boss may be located outside the pressure relief mechanism 213 for ease of fixation. In particular, as shown in FIG. 32 (compression structure 2135 in FIG. 32 is the structure before compression) and FIG. 33 (the compression structure 2135 in FIG. 33 is a structure after compression), the connection block 2131 may further include a second boss 2131c, the second boss 2131c is connected to the outer wall of the connection block 2131 and extends in the direction of the axis of the cutout 2131a, and the second boss 2131c is used. to install a pressure relief mechanism 213 on the battery cell 20.

[0151] It should be appreciated that when installing the pressure relief mechanism 213, the first protective sheet 2133 is closer to the inside of the battery cell 20 than the pressure relief sheet 2132, as shown in FIG. 30-33, the second boss 2131c may be located at the end of the connection block 2131 proximate the compression structure 2135. Thus, when the pressure relief mechanism 213 is mounted on the wall of the battery cell 20, the surface of the pressure relief mechanism 213 proximal to the inside of the battery cell 20 can be held by substantially flush with the inner wall surface, thus the installation of components such as the electrode assembly 22 and the support plate 24 inside the battery cell 20 is not affected, and internal space is saved.

[0152] Additionally, to increase the seal of the first protective sheet 2133, a spacer may be positioned between the first protective sheet 2133 and the first thickening 2131b. In particular, as shown in FIG. 32 and 33, the pressure relief mechanism 213 may further comprise: an annular spacer 2136 disposed between the first protective sheet 2133 and the first thickening 2131b to thereby increase the sealing of the first protective sheet 2133.

[0153] It should be noted that when installing the pressure relief mechanism 213 on the battery cell 20, the pressure relief sheet 2132 is further away from the inside of the battery cell 20 than the first protective sheet 2133, or the pressure relief sheet 2132 is placed on the outside of the battery cell 20. For protection sheet 2132 to relieve pressure from components other than battery cell 20, as shown in FIG. 32 and fig. 33, the pressure relief mechanism 213 may further comprise: a second protective sheet 2137 configured to protect the pressure relief sheet 2132, the second protective sheet 2137 mounted on the connection block 2131 and positioned on a side of the pressure relief sheet 2132 remote from the first nub. 2131b and also covers the sheet 2132 to relieve pressure.

[0154] To facilitate wall mounting of the pressure relief mechanism 213, in some embodiments, the battery cell 20 may further include a coupling mechanism 2431, as shown in FIG. 34. In FIG. 34 is a partial schematic illustration of one wall of housing 211, which wall may be a bottom wall or a side wall of housing 211, i.e., "body 211" in FIG. 34 refers to a portion of the bottom wall of the housing 211. Also, as shown in FIG. 34 and 35, the upper portion corresponds to the inner portion of the housing 211, while the lower portion corresponds to the outer portion of the housing 211, that is, the upper surface of the wall of the housing 211 in the figures represents the inner surface of the housing 211 or the inner wall surface and represents the surface facing the inside of the housing 211, and the bottom wall surface of the housing 211 in the figures represents the outer surface of the housing 211 or the outer wall surface and is a surface facing outward from the housing 211. The wall of the housing 211 is provided with a through hole (not shown in the figures), and the coupling mechanism 2431 is located in the through hole and is ring-shaped, wherein the connecting mechanism 2431 is configured to connect the pressure relief mechanism 213 and the wall, the pressure relief mechanism 213 is located on a side of the connecting mechanism 2431 that is adjacent to the inside of the housing 211, and the pressure relief mechanism 213 is configured to be actuated to reduce internal pressure when the internal pressure or temperature of the battery cell 20 reaches a threshold value.

[0155] It should be understood that the coupling mechanism 2431 and the pressure relief mechanism 213 in embodiments of the present application may be two separate components or may be a structure constructed as a single unit. In particular, as shown in FIG. 34, the connection mechanism 2431 and the pressure relief mechanism 213 may be two components, the pressure relief mechanism 213 may be a sheet-like pressure relief sheet, and the pressure relief mechanism 213 may be fixed on the side of the connection mechanism 2431 near the inside of the housing 211. For example, the pressure relief mechanism 213 and the connecting mechanism 2431 may be fixed by welding, etc., for example, the pressure relief mechanism 213 may be fixed to one side of the connecting mechanism 2431 by laser welding. On the other hand, as shown in FIG. 35, the coupling mechanism 2431 may also be combined with the pressure relief mechanism 213, that is, the coupling mechanism 2431 and the pressure relief mechanism 213 are an integral component. For example, the coupling mechanism 2431 and the pressure relief mechanism 213 may be machined as one piece by stamping, but embodiments of the present application are not limited to this.

[0156] In the case where the pressure relief mechanism 213 is combined with the connecting mechanism 2431, as shown in FIG. 35, the side surface of the connecting mechanism 2431, which is located near the inside of the housing 211, and the side surface of the pressure relief mechanism 213, which is located near the inside of the housing 211, is the same surface, and thus both of them are flush with each other. . At the same time, for the pressure relief mechanism 213 and the connecting mechanism 2431, as shown in FIG. 34, in order to ensure that the side surface of the coupling mechanism 2431, which is proximate the interior of the housing 211, is substantially flush with the side surface of the pressure relief mechanism 213, which is proximate the interior of the casing 211, this can be achieved by providing a recess on the coupling mechanism 2431. .

[0157] However, regardless of any case in FIG. 34 and 35, the coupling mechanism 2431 and the pressure relief mechanism 213 are generally shaped as a recess, the bottom wall of the recess is opposite the opening of the recess, the side wall of the recess is adjacent to the opening of the recess, the pressure relief mechanism 213 is the bottom wall of the recess, and the coupling mechanism 2431 is side wall of the recess. Thus, when the internal pressure or temperature of the battery cell 20 reaches a threshold value, the pressure relief mechanism 213 contains enough space for cracking and opening, that is, the pressure relief mechanism 213 can be opened into the recess portion, whereby the pressure inside the battery cell 20 can be reduced. In some embodiments, the pressure relief mechanism 213 may also be integrated with the housing 211. In such embodiments, the pressure relief mechanism 213 is configured as a pressure relief area. In fig. 36 is a cross-sectional view of the housing 211 in embodiments of the present application. For example, the surface shown in the cross-sectional view may be a surface extending through the pressure relief region and parallel to the side wall of the small area housing 211. In FIG. 37 is an enlarged view of section A1 of FIG. 36, said section A1 contains a pressure relief area, the upper part in FIG. 37 corresponds to the inside of the housing 211, and the lower part in FIG. 36 corresponds to the outer portion of the housing 211. Specifically, as shown in FIG. 37, the pressure relief region in embodiments of the present application may include a first recess 2231 provided in the inner surface of the housing 211 of the battery cell 20, and a second recess 2232 provided in the outer surface of the housing 211 of the battery cell 20, the first recess 2231 and the second recess 2232 disposed opposite each other, wherein the bottom wall of the first recess 2231 and/or the bottom wall of the second recess 2232 is provided with a third recess 2233, and a pressure relief area is configured to crack in the third recess 2233 to reduce the internal pressure when the internal pressure of the battery cell 20 reaches a threshold meanings.

[0158] Thus, when thermal runaway occurs in the battery cell 20, the battery cell 20 may crack at the relatively weak third recess 2233 to reduce the internal pressure. In addition, compared with the method in which the pressure relief mechanism 213 is additionally installed in the battery cell 20, the pressure relief region in the embodiments of the present application has a simpler machining process. For example, the first recess 2231, the second recess 2232 and the third recess 2233 may be provided by stamping, with the first recess 2231 provided opposite the second recess 2232, and in particular, by opposing stamping to simultaneously machine the two recesses, thereby The machining process is convenient and efficient. Moreover, the dimensions, shape, etc. of the three recesses are flexibly set and can be adjusted according to practical applications. Moreover, the housing 211 is generally made of aluminum metal, so the pressure relief area is also made of aluminum, and compared with the optionally provided pressure relief mechanism 213 made of other materials, the pressure relief area in the embodiments of the present application is easier to machine, and it is also easy to open at a time when thermal runaway occurs inside the battery cell 20, whereby the output is more unimpeded and the output speed is high.

[0159] Additionally, given that the electrode clamps 214 are generally provided on the cover plate 212 of the battery cell 20, if a pressure relief area is also provided on the cover plate 212, the pressure release area cracks when thermal runaway occurs inside the battery cell 20, and liquid or solid combustible material, which may also contain conductive material, will spray as the internal gas pressure of the battery cell 20 decreases, which may cause a short circuit between the electrode terminals 214. Moreover, given that the electrode terminals 214 generally face upward, that is, in the direction passenger, when the battery is installed in the vehicle, if the pressure relief area is installed on the same side as the electrode clamps 214, the flow of gas and other materials released after the pressure relief area cracks will be released upward, which may cause burn or scald to the passenger, increasing the risk to the passenger. Therefore, the pressure relief area in the embodiments of the present application can be flexibly selected to be located on the bottom wall or side wall of the housing 211 of the battery cell 20, which will not be limited by the processing method.

[0160] In embodiments of the present application, the third recess 2233 may be provided on the bottom wall of the first recess 2231 and/or the bottom wall of the second recess 2232. However, given that the first recess 2231 is provided on the inner surface of the housing 211 of the battery cell 20, if the third the recess 2233 is provided on the bottom wall of the first recess 2231, due to the presence of electrolyte solution in the body 211, the electrolyte solution will accumulate in the third recess 2233 and cause corrosion of a part of the third recess 2233, which may cause premature cracking of the pressure release area in the third recess 2233, therefore the third a recess 2233 is generally provided on the bottom wall of a second recess 2232 on the outer surface, thereby preventing corrosion from the electrolyte solution. The third recess 2233 provided on the bottom wall of the second recess 2232 is taken as an example for the description below.

[0161] It should be understood that the positions of the first recess 2231 and the second recess 2232 in the embodiments of the present application are located opposite to each other, that is, with respect to the inner surface in which the first recess 2231 of the battery cell 20 is located, the protruding part of the second recess 2232 on the inner surface at least partially overlaps with the first recess 2231. For example, the first recess 2231 located opposite the second recess 2232 is taken as an example for the description below, that is, the axis perpendicular to the bottom wall of the first recess 2231 is the same as the axis perpendicular the lower wall of the second recess 2232.

[0162] The shape of the bottom wall of each of the first recess 2231 and the second recess 2232, which are included in the pressure relief region, in embodiments of the present application can be provided according to practical applications. In addition, the shape of the bottom wall of the first recess 2231 may be the same or different from the shape of the bottom wall of the second recess 2232. For ease of description, the shape of the bottom wall of the first recess 2231, which is the same as the shape of the bottom wall of the second recess 2232, is taken as an example for the description below. The bottom wall shape of the first recess 2231 and the bottom wall shape of the second recess 2232 may be rectangular, circular, elliptical, or annular, which will be described in detail in combination with the two embodiments below.

[0163] Optionally, as a first embodiment, as shown in FIG. 36 and 37, the shape of the bottom wall of the first recess 2231 and the shape of the bottom wall of the second recess 2232 may be ring-shaped, for example, they may be a square ring, a round ring, or other ring shapes. For example, a ring in the shape of a racing track is taken as an example, and the racing track is elliptical, where two ends are shaped like an arc and the middle parts are linear, but the embodiments of the present application are not limited to this.

[0164] As shown in FIG. 37, for ease of machining, providing a third recess 2233 on the bottom wall of the second recess 2232 may include: providing a fourth recess 2234 on the bottom wall of the second recess 2232 and providing a third recess 2233 on the bottom wall of the fourth recess 2234. Given that the shape of the bottom wall of the second recess 2232 is annular, the shape of the bottom wall of the fourth recess 2234 may be consistent with the shape of the bottom wall of the second recess 2232 and is also set to be annular, but embodiments of the present application are not limited to this.

[0165] As shown in FIG. 37, a sectional shape of each of the first recess 2231, the second recess 2232, the third recess 2233 and the fourth recess 2234 in FIG. 37 in embodiments of the present application may be set according to practical applications. For example, the angle formed between the bottom wall and the side wall of the recess may be a rectangular recess, as shown for the second recess 2232 and the fourth recess 2234 in FIG. 37, or a corner recess, as shown for the first recess 2231 and the third recess 2233 in FIG. 37, and the embodiments of the present application are not limited to this.

[0166] Since the first recess 2231 and the second recess 2232 are annular recesses, there will be a protruding structure in their central region. Herein, the protruding structure 2236, which is located near the inside of the housing 211, is taken as an example for illustration. The protruding structure 2236 is the middle region of the annular first recess 2231, and the surface of the protruding structure 2236 that is proximate the housing 211 may not be elevated relative to the inner surface of the housing 211 except in a pressure relief area. For example, the surface of the protruding structure 2236 that is adjacent to the housing 211 may be substantially flush with the interior surface of the housing 211 except for the pressure relief area. Alternatively, as shown in FIG. 37, the surface of the protruding structure 2236 that is adjacent to the housing 211 may also be recessed relative to the inner surface of the housing 211 except for the pressure relief area, and embodiments of the present application are not limited to this.

[0167] Moreover, the periphery of the first recess 2231 is also not raised relative to the inner surface of the housing 211, so the inner surface of the housing 211 is not provided with a shoulder, and when components such as the electrode assembly 22 are installed in the housing 211, it will not be affected by , and in order to avoid the presence of the bead, no additional structure is required, thereby saving internal space.

[0168] As shown in FIG. 37, for the outer portion of the housing 211, a protruding portion 2237 may also be provided on the outer surface of the housing 211 around the second recess 2232, and the protruding portion 2237 extends away from the inner portion of the housing 211 relative to the outer surface of the housing 211. Given that the first recess 2231 and the second recess 2232 are machined by stamping, there is generally a protruding portion 2237 at the edge of the recess, and if the protruding portion 2237 is provided internally, it will affect the installation of the electrode assembly 22 internally, and therefore the protruding portion 2237 may be located on the outer surface building 211.

[0169] When the battery cell 20 is mounted in the battery 10, a component must be provided below the battery cell 20, for example, a cooling plate may be provided to cool the battery cell 20, or a bottom protection plate may also be provided, and embodiments of the present application are not limited to this. . Because of the presence of the component protrusion 2237 below the battery cell 20, the battery cell 20 can be mounted by providing a recessed bypass area on the surface. For example, if a cooling plate is provided under the battery cell 20, the region of the cooling plate corresponding to the pressure relief region may be provided with a recess or through hole, whereby the protruding portion 2237 that protrudes from the pressure relief region can be received in the recess or through hole beyond This saves space.

[0170] Additionally, due to the presence of a protruding portion 2237 between the surface of the pressure relief region remote from the interior of the housing 211 and the surface of a component (such as a thermal control component or a lower protection plate) located below the pressure relief region, the pressure relief region may include a certain open release space to allow cracking and opening of a third recess 2233 in the pressure relief area to reduce internal pressure.

[0171] As shown in FIG. 37, to protect a side of the pressure relief area remote from the housing 211 from the influence of components other than the battery cell 20, the pressure relief area may further comprise: a protective sheet 2235 configured to protect the pressure relief area located on an outer surface of the housing 211 of the battery cell 20. and closing the second recess 2232.

[0172] As mentioned above, the pressure relief mechanism 213 may be located in a corner portion of the housing 211 of the battery cell 20. For example, in some embodiments, as mentioned previously and as shown in FIG. 38, the battery cell 20 in embodiments of the present application includes at least two walls for any two adjacent walls, which for ease of description will be referred to below as the first wall 21a and the second wall 21b, that is, at least two walls provided by the battery cell 20, comprise a first wall 21a and a second wall 21b, and the first wall 21a intersects with the second wall 21b. In this situation, the pressure relief mechanism 213 includes a first portion 2331 and a second portion 2332 connected to each other, with the first portion 2331 provided on the first wall 21a and the second portion 2332 provided on the second wall 21b, that is, the pressure relief mechanism 213 can be bent to form two parts, i.e., the first part 2331 and the second part 2332, so that they are respectively located on the first wall 21a and the second wall 21b. The pressure relief mechanism 213 is located on two walls respectively, and for the two parts of the pressure relief mechanism 213, the first part 2331 and/or the second part 2332 is/are configured so that it can be damaged when the internal pressure or temperature of the battery cell 20 reaches a threshold value, to reduce internal pressure.

[0173] Therefore, in the battery cell 20 in the embodiments of the present application, the pressure relief mechanism 213 is provided at the intersection position of any two adjacent walls, that is, the pressure relief mechanism 213 is located at the intersection of two walls of the body 211 of the battery cell 20, and compared with the pressure relief mechanism provided on only one wall, the total area of the pressure relief mechanism 213 can be increased; and in the event of a short circuit or overcharge in which the internal temperature and gas pressure of the battery cell 20 increases sharply, the pressure release mechanism 213 of the battery cell 20 may crack and open from the two corresponding parts of the two walls in time to release the temperature and pressure outward to prevent an explosion and battery fire. Additionally, since the pressure relief mechanism 213 is provided at the intersection position of two walls, it is less affected by the assemblies inside the battery cell 20. For example, it is less affected by shocks when the electrode assembly 22 is dropped, which can prevent the pressure relief mechanism 213 from cracking and opening in advance. Moreover, the wall of the battery cell 20 exhibits slight deformation at the intersection position of the two walls, which can also ensure that the pressure release mechanism 213 is not affected by creep deformation, thereby improving the overall performance of the battery.

[0174] It should be understood that the pressure relief mechanism 213 may be provided on the first wall 21a and the second wall 21b in embodiments of the present application in a variety of ways, and that the first portion 2331 and the second portion 2332 of the pressure relief mechanism 213 may also be processed in the same or different ways. . However, for ease of machining, the first portion 2331 and the second portion 2332 of the pressure relief mechanism 213 are generally machined in the same manner, and embodiments of the present application are also illustrated by taking as an example that the first portion 2331 and the second portion 2332 of the pressure relief mechanism 213 are generally mechanically machined. processed in the same manner, but the embodiments of the present application are not limited to this.

[0175] For example, providing a pressure relief mechanism 213 on the first wall 21a and the second wall 21b may include that: the pressure relief mechanism 213, the first wall 21a and the second wall 21b may be formed as a single unit, that is, by directly thinning the respective areas of the first wall 21a and the second wall 21b to form a pressure release mechanism 213. However, given that if the first wall 21a and the second wall 21b are the bottom wall and the side wall of the body 211, since the body 211 has a hollow structure, it is difficult to achieve local thinning of the bottom wall and the side wall. Therefore, providing the pressure relief mechanism 213 on the first wall 21a and the second wall 21b may further include: providing an opening on the first wall 21a and the second wall 21b, respectively, to allow the pressure relief mechanism 213 to cover the opening area.

[0176] Specifically, as shown in FIG. 38, the first wall 21a is provided with a first opening 2111 in the area where the first part 2331 is located, with the first part 2331 covering the first opening 2111. Likewise, the second wall 21b is provided with a second opening 2112 in the area where the second part 2332 is located, with the second part 2332 covering the second opening 2112. That is, the pressure relief mechanism 213 is not integrated with the housing 211 of the battery cell 200. Thus, the pressure relief mechanism 213 may be located separately from the battery cell 20. For example, the material of the pressure relief mechanism 213 may be different from the material of the battery cell 20, and their thickness can also be set differently, and thus the pressure relief mechanism 213 can be flexibly arranged according to practical requirements.

[0177] Considering that the first part 2331 and the second part 2332 of the pressure relief mechanism 213 are connected, for ease of machining, the first opening 2111 may also be connected to the second opening 2112. That is, the first opening 2111 on the first wall 21a and the second opening 2112 on the second wall 21b are actually communicated with each other. Thus, only one cutout needs to be processed at the intersection position of two adjacent walls of the battery cell 20, which is convenient for processing.

[0178] Additionally, the first part 2331 and the second part 2332 of the pressure relief mechanism 213 in embodiments of the present application may also be connected. In the case of the pre-installation pressure relief mechanism 213, it may have a sheet-like structure; and when installing the pressure relief mechanism 213, when installing it on the bottom wall and side wall of the housing 211 is taken as an example, the bottom surface can be welded first, that is, the first part 2331 of the pressure relief mechanism 213 is welded to the bottom wall, then the pressure relief mechanism 213 is bent to form the second part 2332, and the second part 2332 is welded to the side wall, whereby processing is more convenient and quick.

[0179] In some embodiments, as shown in FIG. 39, the battery cell 20 may further include a support plate 24, said support plate 24 is disposed between the electrode assembly 22 and the bottom wall of the housing 211, can support the electrode assembly 22, and can also effectively prevent the electrode assembly 22 from causing interference with rounded corners around the bottom wall of the housing 211. The shape of the support plate 24 in the embodiments of the present application can be provided according to practical applications. For example, as shown in FIG. 39, the support plate 24 may be configured to have a rectangular shape consistent with the shape of the bottom wall of the housing 211, or may be configured to have a different shape. Additionally, the support plate 24 may be provided with one or more through holes. For example, a plurality of evenly or symmetrically spaced through holes may be arranged so that the space of the upper and lower surfaces of the support plate 24 can communicate, and the gas that is generated in the electrolyte solution and the electrode assembly 22 and the electrolyte solution can freely flow through the support plate 24 to conducting fluid and gas.

[0180] The thickness of the support plate 24 is generally set to be from 0.3 mm to 5 mm, and the support plate is preferably an insulating component, but may also be non-insulating. For example, the support plate 24 may be made of PP, PE, PET, PPS, Teflon, stainless steel, aluminum and other materials that are resistant to electrolyte solution and also insulating, with PP, PE, PET, PPS and other plastic materials can be selected as fireproof materials, and the surface of aluminum or stainless steel and other metal materials can be anodized and insulated. The support plate 24 may be configured to support the electrode assembly 22 and is located within the first wall of the housing 211; and the support plate 24 includes a protruding portion 241, as shown in FIG. 40, and the projection portion 241 extends toward the pressure relief mechanism 213 and is received inside the opening 2211. By providing the projection portion 241, the projection portion 241 extends toward the pressure relief mechanism 213, that is, the recess can be filled with the projection portion to reduce the accumulation of electrolyte solution in this part, which mitigates the impact and corrosion from the electrolyte solution on the pressure relief mechanism 213 and prevents premature cracking of the pressure relief mechanism 213.

[0181] The battery in the embodiments of the present application is described above with reference to FIGS. 1-40. The method and apparatus for manufacturing a battery in the embodiments of the present application are described below with reference to FIGS. 41 and 42.

[0182] Specifically, in FIG. 41 is a flow diagram of a method 50 for manufacturing a battery in embodiments of the present application. As shown in FIG. 41, method 50 includes: step 51—providing a plurality of battery cells, wherein at least one of the plurality of battery cells includes a pressure relief mechanism, and the pressure relief mechanism is used when the internal pressure or temperature of the at least one battery cell reaches a threshold value; step 52 - providing a bus component configured to electrically connect a plurality of battery cells; and step 53 - positioning the pressure relief mechanism and the tire component, respectively, on different sides of the at least one battery cell, whereby emissions from the at least one battery cell are released in a direction away from the tire component when the release mechanism is activated. pressure.

[0183] In some embodiments, the method further includes providing a thermal control component that is configured to receive fluid for adjusting the temperatures of a plurality of battery cells, and the thermal control component is configured to be damaged when the pressure relief mechanism is activated, thereby causing discharges from the battery cells to occur. through a thermostatic component.

[0184] In some embodiments, the method further includes: attaching a temperature-regulating component to a first wall of at least two walls of a battery cell and providing a pressure release mechanism on the first wall; and attaching a support component to the second wall to support the battery cell.

[0185] In some embodiments, the method further includes: providing an attachment component adapted to be attached to the battery cell using an adhesive; and providing an insulating component whose design prevents the application of adhesive between the attachment component and the pressure relief mechanism.

[0186] In FIG. 42 shows a block diagram of a battery manufacturing apparatus 60 in embodiments of the present application. As shown in FIG. 42, the device 60 in embodiments of the present application includes: a battery cell manufacturing module 61 configured to manufacture a plurality of battery cells, wherein at least one of the plurality of battery cells includes: a pressure relief mechanism that is used to operate to reduce internal pressure when the internal pressure or temperature of the at least one battery cell reaches a threshold value; a bus component manufacturing unit 62, configured to manufacture a bus component, wherein the bus component is configured to electrically connect a plurality of battery cells; and a mounting module 63 configured to suitably position the pressure relief mechanism and the tire component on different sides of the at least one battery cell such that emissions from the at least one battery cell are released in a direction away from the tire component when driven into action of the pressure release mechanism.

[0187] Finally, it should be noted that the above-described embodiments are used only to illustrate, and not limit, the technical solutions of the present application. Although the present application has been described in detail with reference to the preceding embodiments, those skilled in the art should understand that the technical solutions described in the above-mentioned embodiments can still be modified, or equivalently, replace some of the technical solutions thereof, however, such modifications or the substitutions do not render the essence of the respective technical solutions beyond the scope and scope of the technical solutions of the embodiments of the present application.

Claims (115)

1. Battery (10) containing: a plurality of battery cells (20), wherein at least one battery cell (20) of the plurality of battery cells (20) contains: a pressure relief mechanism (213), wherein the pressure relief mechanism (213) is operable to reduce the internal pressure when the internal pressure or temperature of the at least one battery cell (20) reaches a threshold value; And a bus-shaped component (12) configured to electrically connect a plurality of battery cells (20), wherein the pressure relief mechanism (213) and the tire component (12) are respectively located on opposite sides of the at least one battery cell (20), whereby emissions from the at least one battery cell (20) are released in a direction away from component (12) in the form of a tire when actuating the pressure release mechanism (23), wherein the battery further comprises a temperature control component (13) configured to receive a fluid for adjusting the temperatures of the plurality of battery cells (20), and wherein the temperature control component (13) is configured to be damaged when the pressure relief mechanism (213) is activated, whereby emissions from the battery cell (20) pass through the temperature control component (13). 2. The battery according to claim 1, characterized in that the temperature control component (13) is designed to be damaged when the pressure relief mechanism (213) is activated, causing fluid to flow out. 3. Battery according to claim 1, characterized in that the temperature control component (13) contains: a first thermal conductive plate (131), wherein the first thermal conductive plate (131) is attached to a plurality of battery cells (20); a second thermal conduction plate (132), wherein the second thermal conductive plate (132) is located on a side of the first thermal conductive plate (131) remote from the battery cells (20); And a flow path (133), wherein a flow path (133) is formed between the first thermal conductive plate (131) and the second thermal conductive plate (132) to allow fluid to flow in the flow path (133). 4. Battery according to claim 1, characterized in that the temperature control component (13) additionally contains: bypass structure (134), wherein the bypass structure (134) is configured to provide space to allow the pressure relief mechanism (213) to be activated, and wherein a temperature control component (13) is attached to a plurality of battery elements (20) to form a bypass chamber (134a) between the bypass structure (134) and the pressure relief mechanism (213). 5. The battery according to claim 4, characterized in that the bypass structure (134) includes a lower bypass wall (134b) and a side bypass wall (134c) surrounding the bypass chamber (134a), and the lower bypass wall (134b) is made with the possibility of damage when the pressure relief mechanism (213) is activated, causing emissions from the battery cell (20) to pass through the temperature control component (13). 6. Battery according to claim 1, characterized in that the temperature control component (13) additionally contains: bypass structure (134), wherein the bypass structure (134) is configured to provide space to allow the pressure relief mechanism (213) to be activated, and wherein the bypass structure (134) is a through hole penetrating the temperature control component (13), and the bypass side wall (134c) of the bypass structure (134) is a wall with an opening in the form of a through hole. 7. The battery according to claim 5, characterized in that the side wall (134c) of the bypass is designed to be damaged when the pressure relief mechanism (213) is activated, as a result of which the fluid flows out. 8. The battery according to claim 5, characterized in that the side wall (134c) of the bypass forms a predetermined internal angle relative to the direction of the pressure release mechanism (213) in the direction of the thermostatic component (13), and the specified internal angle is greater than or equal to 15° and less than or equal to 85°. 9. The battery according to claim 4, characterized in that the temperature control component (13) includes a release mechanism configured to be actuated upon activation of the pressure release mechanism (213) to allow at least emissions from the battery cell (20 ) via the thermostatic component (13). 10. The battery according to claim 4, characterized in that it additionally contains: a collection chamber (11b), wherein the collection chamber (11b) is configured to collect emissions from the battery cell (20) and the temperature control component (13) when the pressure relief mechanism (213) is activated, in this case, the bypass chamber (134a) and the collection chamber (11b) are isolated by a thermostatic component (13). 11. The battery according to claim 6, characterized in that it additionally contains: a collection chamber (11b), wherein the collection chamber (11b) is configured to collect emissions from the battery cell (20) and the temperature control component (13) when the pressure relief mechanism (213) is activated, in this case, the bypass structure (134) communicates with the collection chamber (11b). 12. The battery according to claim 10, characterized in that it additionally contains: a protective element (115), wherein the protective element (115) is located on a side of the temperature control component (13) remote from the battery cells (20), and the collection chamber (11b) is located between the temperature control component (13) and the protective element (115). 13. The battery according to claim 12, characterized in that it additionally contains: a sealing element located between the temperature control component (13) and the protective element (115) to seal the collection chamber (11b). 14. The battery according to claim 10, characterized in that it additionally contains: a closing piece (111), wherein the closing piece (111) is adjacent to the tire-shaped component (12), and the distance between them is less than 2 mm. 15. Battery according to claim 14, characterized in that the closing part (111) is in contact with the tire-shaped component (12). 16. The battery according to claim 14, characterized in that it additionally contains: a casing shell (112), wherein the casing shell (112) and the cover piece (111) together form an enclosing electrical chamber (11a) for housing a plurality of battery cells (20). 17. The battery according to claim 10, characterized in that it additionally contains: a cover piece (111) containing a receiving space (111a), wherein the receiving space (111a) is configured to receive a tire-shaped component (12); And an insulating part (113), wherein the insulating part (113) is attached to the closing part (111) and is configured to close at least the tire-shaped component (12). 18. Battery according to claim 17, characterized in that the insulating part (113) is applied to or mounted on the closing part (111). 19. The battery according to claim 17, characterized in that it additionally contains: a casing shell (112), wherein the casing shell (112) and the cover piece (111) together form an enclosing electrical chamber (11a) for housing a plurality of battery cells (20); And a battery control unit, wherein the battery control unit is at least partially located outside the electrical chamber (11a). 20. Battery according to claim 19, characterized in that the battery control unit is at least partially integrated into the closing part (111). 21. The battery according to claim 16, characterized in that the temperature control component (13) is a lower part of the casing shell (112), and the casing shell (112) further comprises a side part (112b), the side part (112b) is sealed with thermostatic component (13). 22. The battery according to claim 16, characterized in that the temperature control component (13) is built into or located inside the casing shell (112). 23. The battery according to claim 16, characterized in that the collection chamber (11b) is formed between the temperature control component (13) and the casing shell (112) or is built inside the casing shell (112). 24. The battery according to claim 1, characterized in that the battery cell (20) further comprises a housing (211) having an opening (211b) and surrounded by a plurality of walls, and a cover plate (212) for closing the opening (211b), and wherein the pressure release mechanism (213) is located on at least one of the plurality of walls. 25. The battery according to claim 24, characterized in that the outer surface of the pressure relief mechanism (213) is flush with or recessed into the outer surface of at least one wall. 26. The battery according to claim 24, characterized in that the pressure release mechanism (213) is located in the corner portion between two adjacent walls of a plurality of walls. 27. The battery according to claim 24, characterized in that a plurality of pressure relief mechanisms (213) are provided, the plurality of pressure relief mechanisms (213) being located on one of the plurality of walls, or a plurality of pressure release mechanisms (213) are located on at least two of the plurality of walls. 28. The battery according to claim 1, characterized in that the battery cell (20) comprises at least two walls, wherein the at least two walls comprise a first wall and a second wall that intersect each other, a pressure release mechanism (213) is provided on the first wall, and a temperature control component (13) is attached to the first wall, and the battery further includes a support component, wherein the support component is attached to the second wall and configured to support the battery cell (20). 29. The battery according to claim 10, characterized in that the battery cell (20) comprises at least two walls, wherein the at least two walls comprise a first wall and a second wall that intersect each other, a pressure release mechanism (213) is provided on the first wall, and a temperature control component (13) is attached to the first wall, and the battery further includes a support component, wherein the support component is attached to the second wall and configured to support the battery cell (20). 30. The battery according to claim 28, characterized in that it additionally contains: a collection chamber (11b), wherein the collection chamber (11b) is configured to collect emissions from the battery cell (20) and the temperature control component (13) upon activation of the pressure relief mechanism (213), and wherein the support component contains an additional collection chamber, and the additional collection chamber is in communication with the collection chamber (11b). 31. The battery according to claim 29, characterized in that the support component contains an additional collection chamber, and the additional collection chamber is in communication with the collection chamber (11b). 32. The battery according to claim 28, characterized in that it additionally contains: a housing (11), wherein the housing (11) includes a cover member (111) and a housing shell (112), and the housing shell (112) and the cover member (111) together form a female electrical chamber (11a) for housing a plurality of battery cells (20), wherein the support component is a lower portion of the housing shell (112) or located within the housing shell (112). 33. The battery according to claim 16, characterized in that the battery cell (20) comprises at least two walls, wherein the at least two walls comprise a first wall and a second wall that intersect each other, a pressure release mechanism (213) is provided on the first wall, and a temperature control component (13) is attached to the first wall, and the battery further includes a support component, wherein the support component is attached to the second wall and configured to support the battery cell (20). 34. The battery according to claim 33, characterized in that the support component is a lower part of the casing shell (112) or is located inside the casing shell (112). 35. The battery according to claim 28, characterized in that the support component is integral with the temperature control component (13), or the support component is attached to the temperature control component (13). 36. The battery of claim 28, wherein the support component comprises an additional flow channel, wherein the additional flow channel is in communication with the flow channel (133) to allow fluid to flow therein in the thermostatic component (13). 37. The battery according to claim 33, characterized in that the support component contains an additional collection chamber, and the additional collection chamber is in communication with the collection chamber (11b). 38. The battery according to claim 32, characterized in that it additionally contains: a strip (114) extending between the closing piece (111) and the casing shell (112), in this case, the temperature control component (13) is located between the strip (114) and the battery element (20). 39. The battery according to claim 38, characterized in that the bar (114) is hollow, and the hollow space of the bar (114) constitutes a collection chamber (11b). 40. The battery according to claim 28, characterized in that the outer surface of the pressure relief mechanism (213) is flush with the outer surface of the first wall or recessed into it. 41. The battery according to claim 28, characterized in that the battery cell (20) further comprises a housing (211) having an opening (211b) and surrounded by a plurality of walls, and a cover plate (212) for closing the opening (211b), and wherein the first wall comprises a cover plate (212) or at least one of a plurality of housing walls (211). 42. The battery according to claim 1, characterized in that it additionally contains: an attachment component adapted to be attached to the battery cell (20) using adhesive; And an insulating component (14), wherein the insulating component (14) is configured to prevent adhesive from being applied between the attachment component and the pressure release mechanism (213). 43. Battery according to claim 42, characterized in that the insulating component (14) contains: main part (141); And a protrusion (142), wherein the protrusion (142) protrudes from the main part (141) in the direction of the protrusion, the protrusion (142) being configured to align with the pressure release mechanism (213) in the direction of the protrusion when the main part (141) is attached to the component for attachment, and the peripheral size of the projection (142) is greater than or equal to the size of the pressure relief mechanism (213). 44. The battery of claim 43, wherein the height of the protrusion (142) is greater than or equal to a predetermined adhesive application height and is compressible to accommodate the adhesive height when attaching the plurality of battery cells (20) to the attachment component. 45. The battery according to claim 42, characterized in that the attachment component comprises a temperature-regulating component (13). 46. The battery according to claim 1, characterized in that the pressure relief mechanism (213) comprises at least one of a pressure-sensitive pressure relief mechanism and a temperature-sensitive pressure relief mechanism. 47. The battery according to claim 1, characterized in that the pressure release mechanism (213) contains: a connecting block (2131), wherein the connecting block (2131) includes a cutout (2131a) and a first boss (2131b), wherein the first boss (2131b) is connected to the inner wall of the cutout (2131a) and extends in the direction of the axis of the cutout (2131a); a pressure relief sheet (2132) operable to reduce the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold value, wherein the pressure relief sheet (2132) is provided on the first bulge side (2131b); a first protective sheet (2133) configured to protect the pressure relief sheet (2132) and located on the other side of the first boss (2131b) remote from the pressure relief sheet (2132); a compression ring (2134) configured to compress the first protective sheet (2133) and located on a side of the first protective sheet (2133) remote from the first thickening (2131b); And a compression structure (2135) connected to the connecting block (2131) and compressible in the direction of the axis of the cutout (2131a) to compress the compression ring (2134). 48. The battery according to claim 47, characterized in that the pressure release mechanism (213) additionally contains: a second protective sheet (2137) configured to protect the pressure relief sheet (2132), wherein the second protective sheet (2137) is mounted on the connecting block (2131) and placed on a side of the pressure relief sheet (2132) remote from the first bulge (2131b) and also covers the sheet (2132) to relieve pressure. 49. Battery according to claim 24, characterized in that the battery cell (20) additionally contains: a connecting mechanism (2431) located in the opening (2211) of the housing wall (211), where the pressure relief mechanism (213) is located, and having a ring shape, while the connecting mechanism (2431) is configured to connect the pressure relief mechanism (213) with wall, and the pressure relief mechanism (213) is located on the side of the connecting mechanism (2431), which is closer to the inside of the housing (211). 50. The battery according to claim 1, characterized in that the pressure relief mechanism (213) is designed as a pressure relief region of the housing (211) of the battery cell (20), the pressure relief region comprising a first recess (2231) provided in the inner surface housing (211) of the battery cell (20), and a second recess (2232) provided on the outer surface of the housing (211), and the first recess (2231) is located opposite the second recess (2232), wherein the lower wall of the first recess (2231) and /or the bottom wall of the second recess (2232) is provided with a third recess (2233), and the pressure relief area is configured to crack in the third recess (2233) to reduce the internal pressure when the internal pressure of the battery cell (20) reaches a threshold value. 51. A vehicle containing a battery according to any one of paragraphs. 1-50, wherein the battery is configured to supply electrical energy. 52. A method for manufacturing a battery according to any one of paragraphs. 1-50, and the method includes: providing a plurality of battery cells (20), wherein at least one battery cell (20) of the plurality of battery cells (20) comprises: a pressure relief mechanism (213), wherein the pressure relief mechanism (213) is operable to reduce the internal pressure when the internal pressure or temperature of the at least one battery cell (20) reaches a threshold value; providing a busbar component (12) and electrically connecting a plurality of battery cells (20) via the busbar component (12); And positioning the pressure relief mechanism (213) and the tire component (12), respectively, on opposite sides of the at least one battery cell (20), whereby emissions from the at least one battery cell (20) are released in a direction away from the component ( 12) in the form of a tire when the pressure release mechanism (213) is activated, wherein the method further comprises providing a temperature control component (13) configured to receive a fluid for adjusting the temperature of the plurality of battery cells (20), and wherein the temperature control component (13) is configured to be damaged upon activation of the pressure relief mechanism (213). , causing emissions from the battery cell (20) to pass through the temperature control component (13). 53. The method according to claim 52, characterized in that it additionally includes: attaching a temperature control component (13) to a first wall of at least two walls of the battery cell (20) and providing a pressure release mechanism (213) on the first wall; And attaching a support component that is configured to support the battery cell (20) to the second wall. 54. The method according to claim 52, characterized in that it additionally includes: providing an attachment component adapted to be attached to the battery cell (20) using adhesive; And providing an insulating component (14), wherein the insulating component (14) is configured to prevent adhesive from being applied between the attachment component and the pressure relief mechanism (213). 55. A device for producing a battery according to any one of paragraphs. 1-50, while the device contains: a battery cell manufacturing module configured to produce a plurality of battery cells (20), wherein at least one battery cell (20) of the plurality of battery cells (20) contains: a pressure relief mechanism (213), wherein the pressure relief mechanism (213) is operable to reduce the internal pressure when the internal pressure or temperature of the at least one battery cell (20) reaches a threshold value; a bus component manufacturing module configured to manufacture a bus component (12), wherein the bus component (12) is configured to electrically connect a plurality of battery cells (20); And a mounting module configured to suitably locate a pressure relief mechanism (213) and a tire component (12) on opposite sides of at least one battery cell (20), whereby emissions from the at least one battery cell (20) are released into direction away from the tire component (12) when operating the pressure relief mechanism (213).